\u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n Sinh n\u0103m 2016 t\u1ed5 ch\u1ee9c thi l\u1ea7n th\u1ee9 7 bao g\u1ed3m 50 c\u00e2u h\u1ecfi v\u00e0 c\u00f3 \u0111\u00e1p \u00e1n h\u01b0\u1edbng d\u1eabn tr\u1ea3 l\u1eddi b\u00ean d\u01b0\u1edbi<\/strong><\/h2>\n\nXem th\u00eam: \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n Sinh<\/p>\n<\/div>\n
C\u00e2u 1:<\/strong>(ID: 91317)<\/strong>M\u1ed9t h\u1ed7n h\u1ee3p g\u1ed3m U, G v\u00e0 X v\u1edbi t\u1ec9 l\u1ec7 U: G : X = 2 : 3 : 1. X\u00e1c su\u1ea5t t\u1ea1o ra lo\u1ea1i b\u1ed9 ba c\u00f3 2U v\u00e0 1X t\u1eeb h\u1ed7n h\u1ee3p tr\u00ean l\u00e0<\/p>\nA.<\/strong>1\/54. B.<\/strong>1\/18. C.<\/strong>15\/216. D.<\/strong>125\/216.\u00ad<\/u><\/p>\nC\u00e2u 2:<\/strong>(ID: 91319)<\/strong>M\u1ed9t \u0111o\u1ea1n gen c\u00f3 tr\u00ecnh t\u1ef1 nucl\u00ea\u00f4tit l\u00e0<\/p>\n3\u2019…AAXGTTGXGAXTGGT…5\u2019<\/strong>(m\u1ea1ch b\u1ed5 sung ) <\/p>\n5 \u2019…<\/strong>TTGXAAXGXTGAXXA …3\u2019<\/strong>(m\u1ea1ch m\u00e3 g\u1ed1c )<\/p>\nTr\u00ecnh t\u1ef1 nucl\u00ea\u00f4tit tr\u00ean mARN khi \u0111o\u1ea1n gen tr\u00ean phi\u00ean m\u00e3 s\u1ebd l\u00e0<\/p>\n
A.<\/strong>3\u2019\u2026AAXGUUGXGAXUGGU\u20265\u2019. B.<\/strong>5\u2019\u2026AAXGUUGXGAXUGGU\u20263\u2019.<\/p>\nC.<\/strong>5\u2019\u2026UUGXAAXGXUGAXXA\u20263\u2019. D.<\/strong>3\u2019\u2026AAXGTTGXGAXTGGT\u20265\u2019.<\/p>\nC\u00e2u 3:<\/strong>(ID: 91328)<\/strong>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 s\u01a1 \u0111\u1ed3 ph\u1ea3 h\u1ec7 trong m\u1ed9t gia \u0111\u00ecnh v\u1ec1 t\u00ednh tr\u1ea1ng nh\u00f3m m\u00e1u. Bi\u1ebft nh\u00f3m m\u00e1u do 1 gen c\u00f3 3 alen n\u1eb1m tr\u00ean nhi\u1ec5m s\u1eafc th\u1ec3 th\u01b0\u1eddng quy \u0111\u1ecbnh. X\u00e1c su\u1ea5t \u0111\u1ec3 v\u1ee3 nh\u00f3m m\u00e1u A, ch\u1ed3ng nh\u00f3m m\u00e1u B sinh con c\u00f3 nh\u00f3m m\u00e1u O trong s\u01a1 \u0111\u1ed3 ph\u1ea3 h\u1ec7 l\u00e0:<\/p>\n![](\"http:\/\/img.toanhoc247.com\/picture\/2015\/1020\/2015-10-20-135540.png\")
<\/p>\n
A.<\/strong>1\/12. B.<\/strong>1\/16. C.<\/strong>1\/6. D.<\/strong>1\/4.<\/p>\nC\u00e2u 4:<\/strong>(ID: 91333)<\/strong>M\u1ed7i t\u1ebf b\u00e0o l\u01b0\u1ee1ng b\u1ed9i \u1edf 1 lo\u00e0i c\u00f3 4 c\u1eb7p NST ch\u1ee9a c\u1ea3 th\u1ea3y 283.10<\/p>\n6<\/dd>\nc\u1eb7p nucl\u00ea\u00f4tit. \u1ede k\u00ec gi\u1eefa, chi\u1ec1u d\u00e0i trung b\u00ecnh c\u1ee7a 1 NST l\u00e0 2 mm, th\u00ec c\u00e1c ADN \u0111\u00e3 co ng\u1eafn kho\u1ea3ng<\/p>\n
A.<\/strong>1013 l\u1ea7n B.<\/strong>8013 l\u1ea7n C.<\/strong>6013 l\u1ea7n D.<\/strong>4013 l\u1ea7n<\/p>\nC\u00e2u 5:<\/strong>(ID: 91334)<\/strong>Trong m\u1ed9t qu\u1ea7n th\u1ec3 ng\u1eabu ph\u1ed1i x\u00e9t ba gen: gen th\u1ee9 nh\u1ea5t v\u00e0 gen th\u1ee9 hai n\u1eb1m tr\u00ean hai c\u1eb7p nhi\u1ec5m s\u1eafc th\u1ec3 th\u01b0\u1eddng kh\u00e1c nhau, gen th\u1ee9 ba n\u1eb1m tr\u00ean nhi\u1ec5m s\u1eafc th\u1ec3 X c\u00f3 alen t\u01b0\u01a1ng \u1ee9ng tr\u00ean Y (\u1edf v\u00f9ng t\u01b0\u01a1ng \u0111\u1ed3ng c\u1ee7a c\u1ea3 X v\u00e0 Y), gen th\u1ee9 nh\u1ea5t c\u00f3 3 alen, gen th\u1ee9 hai c\u00f3 3 alen, gen th\u1ee9 ba c\u00f3 4 alen. S\u1ed1 ki\u1ec3u gen t\u1ed1i \u0111a v\u1ec1 3 gen tr\u00ean trong qu\u1ea7n th\u1ec3 l\u00e0<\/p>\nA.<\/strong>360. B.<\/strong>936. C.<\/strong>1134. D.<\/strong>504.<\/p>\nC\u00e2u 6:<\/strong>(ID: 91336)<\/strong>Theo quan ni\u1ec7m c\u1ee7a \u0110acuyn, ngu\u1ed3n nguy\u00ean li\u1ec7u ch\u1ee7 y\u1ebfu c\u1ee7a ti\u1ebfn ho\u00e1 l\u00e0<\/p>\nA.<\/strong>\u0111\u1ed9t bi\u1ebfn nhi\u1ec5m s\u1eafc th\u1ec3. B.<\/strong>th\u01b0\u1eddng bi\u1ebfn.<\/p>\nC.<\/strong>\u0111\u1ed9t bi\u1ebfn gen. D.<\/strong>bi\u1ebfn d\u1ecb c\u00e1 th\u1ec3.<\/p>\nC\u00e2u 7:<\/strong>(ID: 91344)<\/strong>\u1ede m\u1ed9t lo\u00e0i th\u1ef1c v\u1eadt, chi\u1ec1u cao c\u00e2y do 5 c\u1eb7p gen kh\u00f4ng alen t\u00e1c \u0111\u1ed9ng c\u1ed9ng g\u1ed9p quy \u0111\u1ecbnh. S\u1ef1 c\u00f3 m\u1eb7t c\u1ee7a m\u1ed7i alen tr\u1ed9i l\u00e0m chi\u1ec1u cao t\u0103ng th\u00eam 5cm. Lai c\u00e2y cao nh\u1ea5t c\u00f3 chi\u1ec1u cao 210cm v\u1edbi c\u00e2y th\u1ea5p nh\u1ea5t \u0111\u01b0\u1ee3c F<\/p>\n1<\/dd>\nc\u00f3 chi\u1ec1u cao trung b\u00ecnh. Cho F<\/p>\n
1<\/dd>\ngiao ph\u1ea5n v\u1edbi nhau th\u00ec t\u1ec9 l\u1ec7 nh\u00f3m c\u00e2y c\u00f3 chi\u1ec1u cao 185cm \u1edf F<\/p>\n
2<\/dd>\nl\u00e0<\/p>\n
A.<\/strong>108\/256. B.<\/strong>63\/256. C.<\/strong>126\/256. D.<\/strong>121\/256.<\/p>\nC\u00e2u 8:<\/strong>(ID: 91347)<\/strong>\u1ede m\u1ed9t lo\u00e0i th\u1ef1c v\u1eadt, alen A quy \u0111\u1ecbnh th\u00e2n cao tr\u1ed9i ho\u00e0n to\u00e0n so v\u1edbi alen a quy \u0111\u1ecbnh th\u00e2n th\u1ea5p; alen B quy \u0111\u1ecbnh hoa t\u00edm tr\u1ed9i ho\u00e0n to\u00e0n so v\u1edbi alen b quy \u0111\u1ecbnh hoa tr\u1eafng; alen D quy \u0111\u1ecbnh qu\u1ea3 \u0111\u1ecf tr\u1ed9i ho\u00e0n to\u00e0n v\u1edbi alen d quy \u0111\u1ecbnh qu\u1ea3 v\u00e0ng; alen E quy \u0111\u1ecbnh qu\u1ea3 tr\u00f2n tr\u1ed9i ho\u00e0n to\u00e0n so v\u1edbi alen e quy \u0111\u1ecbnh qu\u1ea3 d\u00e0i. Bi\u1ebft gi\u1ea3m ph\u00e2n b\u00ecnh th\u01b0\u1eddng, qu\u00e1 tr\u00ecnh ph\u00e1t sinh giao t\u1eed \u0111\u1ef1c v\u00e0 giao t\u1eed c\u00e1i \u0111\u1ec1u x\u1ea3y ra ho\u00e1n v\u1ecb gen gi\u1eefa c\u00e1c alen B v\u00e0 b v\u1edbi t\u1ea7n s\u1ed1 20%, gi\u1eefa c\u00e1c alen E v\u00e0 e v\u1edbi t\u1ea7n s\u1ed1 40%.<\/p>\nPh\u00e9p lai (P) x cho F<\/p>\n
1<\/dd>\nc\u00f3 ki\u1ec3u gen d\u1ecb h\u1ee3p c\u1ea3 4 c\u1eb7p gen l\u00e0<\/p>\n
A.<\/strong>4,16%. B.<\/strong>8.84% C.<\/strong>38,94% D.<\/strong>2,88%<\/p>\nC\u00e2u 9:<\/strong>(ID: 91349)<\/strong>\u1ede ng\u01b0\u1eddi, b\u1ec7nh b\u1ea1ch t\u1ea1ng do m\u1ed9t alen \u0111\u1ed9t bi\u1ebfn l\u1eb7n. Nh\u1eefng ng\u01b0\u1eddi b\u1ea1ch t\u1ea1ng l\u1ea5y nhau th\u01b0\u1eddng sinh ra 100% s\u1ed1 con b\u1ecb b\u1ec7nh b\u1ea1ch t\u1ea1ng. Tuy nhi\u00ean trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, hai v\u1ee3 ch\u1ed3ng b\u1ea1ch t\u1ea1ng l\u1ea5y nhau l\u1ea1i sinh ra ng\u01b0\u1eddi con b\u00ecnh th\u01b0\u1eddng. C\u00f3 th\u1ec3 gi\u1ea3i th\u00edch c\u01a1 s\u1edf c\u1ee7a hi\u1ec7n t\u01b0\u1ee3ng tr\u00ean nh\u01b0 sau<\/p>\nA.<\/strong>gen b\u1ea1ch t\u1ea1ng \u1edf m\u1eb9 v\u00e0 b\u1ed1 kh\u00e1c nhau n\u00ean \u0111\u00e3 t\u01b0\u01a1ng t\u00e1c gen cho con b\u00ecnh th\u01b0\u1eddng.<\/p>\nB.<\/strong>\u0111\u00e3 c\u00f3 s\u1ef1 \u0111\u1ed9t bi\u1ebfn gen l\u1eb7n th\u00e0nh gen tr\u1ed9i n\u00ean cho con kh\u00f4ng b\u1ecb b\u1ec7nh.<\/p>\nC.<\/strong>do m\u00f4i tr\u01b0\u1eddng kh\u00f4ng th\u00edch h\u1ee3p n\u00ean th\u1ec3 \u0111\u1ed9t bi\u1ebfn kh\u00f4ng bi\u1ec3u hi\u1ec7n b\u1ea1ch t\u1ea1ng.<\/p>\nD.<\/strong>do \u0111\u1ed9t bi\u1ebfn nhi\u1ec5m s\u1eafc th\u1ec3 l\u00e0m m\u1ea5t \u0111o\u1ea1n ch\u1ee9a alen b\u1ea1ch t\u1ea1ng n\u00ean con b\u00ecnh th\u01b0\u1eddng.<\/p>\nC\u00e2u 10:<\/strong>(ID: 91350)<\/strong>Cho nh\u1eefng v\u00ed d\u1ee5 sau:<\/p>\n(1) C\u00e1nh d\u01a1i v\u00e0 c\u00e1nh b\u01b0\u1edbm<\/p>\n
(2) V\u00e2y ng\u1ef1c c\u1ee7a c\u00e1 voi v\u00e0 tay kh\u1ec9.<\/p>\n
(3) Mang c\u00e1 v\u00e0 mang t\u00f4m.<\/p>\n
(4) Chi tr\u01b0\u1edbc c\u1ee7a th\u00fa v\u00e0 tay ng\u01b0\u1eddi.<\/p>\n
Nh\u1eefng v\u00ed d\u1ee5 v\u1ec1 c\u01a1 quan t\u01b0\u01a1ng \u0111\u1ed3ng l\u00e0<\/p>\n
A.<\/strong>(1) v\u00e0 (2). B.<\/strong>(2) v\u00e0 (4). C.<\/strong>(1) v\u00e0 (4). D.<\/strong>(1) v\u00e0 (3).<\/p>\nC\u00e2u 11:<\/strong>(ID: 91364)<\/strong>M\u1ed9t qu\u1ea7n th\u1ec3 th\u1ef1c v\u1eadt c\u00f3 320 c\u00e1 th\u1ec3 c\u00f3 ki\u1ec3u gen AA, 81 c\u00e1 th\u1ec3 c\u00f3 ki\u1ec3u gen aa v\u00e0 403 c\u00e1 th\u1ec3 c\u00f3 ki\u1ec3u gen Aa . Sau 5 th\u1ebf h\u1ec7 giao ph\u1ed1i ng\u1eabu nhi\u00ean th\u00ec t\u1ea7n s\u1ed1 ki\u1ec3u gen Aa \u1edf th\u1ebf h\u1ec7 sau qu\u1ea7n th\u1ec3 n\u00e0y s\u1ebd l\u00e0 bao nhi\u00eau? Gi\u1ea3 s\u1eed qu\u1ea7n th\u1ec3 kh\u00f4ng ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a c\u00e1c nh\u00e2n t\u1ed1 ti\u1ebfn h\u00f3a<\/p>\nA.<\/strong>1,56% B.<\/strong>48,15% C.<\/strong>42, 20% D.<\/strong>45,50%<\/p>\nC\u00e2u 12:<\/strong>(ID: 91369)<\/strong>\u1ede m\u1ed9t lo\u00e0i th\u1ef1c v\u1eadt, x\u00e9t m\u1ed9t c\u00e2y F<\/p>\n1<\/dd>\nc\u00f3 ki\u1ec3u gen ( ) t\u1ef1 th\u1ee5 ph\u1ea5n, trong qu\u00e1 tr\u00ecnh gi\u1ea3m ph\u00e2n t\u1ea1o giao t\u1eed 40 % t\u1ebf b\u00e0o sinh h\u1ea1t ph\u1ea5n x\u1ea3y ra ho\u00e1n v\u1ecb gen \u1edf c\u1eb7p NST mang gen A, B; 20% t\u1ebf b\u00e0o sinh h\u1ea1t ph\u1ea5n x\u1ea3y ra ho\u00e1n v\u1ecb gen \u1edf c\u1eb7p NST mang gen D, E. Bi\u1ebft r\u1eb1ng m\u1ed7i gen quy \u0111\u1ecbnh m\u1ed9t t\u00ednh tr\u1ea1ng, gen tr\u1ed9i ho\u00e0n to\u00e0n v\u00e0 ho\u00e1n v\u1ecb gen x\u1ea3y ra trong qu\u00e1 tr\u00ecnh ph\u00e1t sinh giao t\u1eed \u0111\u1ef1c v\u00e0 c\u00e1i v\u1edbi t\u1ea7n s\u1ed1 b\u1eb1ng nhau. T\u00ednh theo l\u00ed thuy\u1ebft th\u00ec t\u1ec9 l\u1ec7 c\u00e2y F<\/p>\n
2<\/dd>\nc\u00f3 ki\u1ec3u h\u00ecnh A-B-D-ee l\u00e0<\/p>\n
A.<\/strong>12,06 %. B.<\/strong>15,84 %. C.<\/strong>16,335 %. D.<\/strong>14,16 %.<\/p>\nC\u00e2u 13:<\/strong>(ID: 91371)<\/strong>M\u1ed9t t\u1ebf b\u00e0o sinh d\u01b0\u1ee1ng c\u1ee7a m\u1ed9t lo\u00e0i c\u00f3 b\u1ed9 nhi\u1ec5m s\u1eafc th\u1ec3 k\u00ed hi\u1ec7u l\u00e0 AaBbDdEe. Trong qu\u00e1 tr\u00ecnh ph\u00e2n b\u00e0o, t\u1ebf b\u00e0o n\u00e0y b\u1ecb r\u1ed1i lo\u1ea1n ph\u00e2n li \u1edf 1 nhi\u1ec5m s\u1eafc th\u1ec3 k\u00e9p trong c\u1eb7p Dd s\u1ebd t\u1ea1o ra 2 t\u1ebf b\u00e0o con c\u00f3 k\u00ed hi\u1ec7u nhi\u1ec5m s\u1eafc th\u1ec3 l\u00e0<\/p>\nA.<\/strong>AaBbDDdEe v\u00e0 AaBbddEe. B.<\/strong>AaBbDDddEe v\u00e0 AaBbEe.<\/p>\nC.<\/strong>AaBbDddEe v\u00e0 AaBbDEe. D.<\/strong>AaBbDddEe v\u00e0 AaBbddEe.<\/p>\nC\u00e2u 14:<\/strong>(ID: 91373)<\/strong>C\u00e1c nh\u00e2n t\u1ed1 ti\u1ebfn ho\u00e1 n\u00e0o sau \u0111\u00e2y v\u1eeba l\u00e0m thay \u0111\u1ed5i t\u1ea7n s\u1ed1 alen v\u1eeba c\u00f3 th\u1ec3 l\u00e0m phong ph\u00fa v\u1ed1n gen c\u1ee7a qu\u1ea7n th\u1ec3?<\/p>\nA.<\/strong>Ch\u1ecdn l\u1ecdc t\u1ef1 nhi\u00ean v\u00e0 giao ph\u1ed1i kh\u00f4ng ng\u1eabu nhi\u00ean.<\/p>\nB.<\/strong>Ch\u1ecdn l\u1ecdc t\u1ef1 nhi\u00ean v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 ng\u1eabu nhi\u00ean.<\/p>\nC.<\/strong>\u0110\u1ed9t bi\u1ebfn v\u00e0 di – nh\u1eadp gen.<\/p>\nD.<\/strong>Giao ph\u1ed1i ng\u1eabu nhi\u00ean v\u00e0 c\u00e1c c\u01a1 ch\u1ebf c\u00e1ch li.<\/p>\nC\u00e2u 15:<\/strong>(ID: 91375)<\/strong>\u1ede m\u1ed9t lo\u00e0i th\u1ef1c v\u1eadt, hai c\u1eb7p gen Aa v\u00e0 Bb quy \u0111\u1ecbnh 2 t\u00ednh tr\u1ea1ng t\u01b0\u01a1ng ph\u1ea3n, gi\u00e1 tr\u1ecb th\u00edch nghi c\u1ee7a c\u00e1c alen \u0111\u1ec1u nh\u01b0 nhau, t\u00ednh tr\u1ea1ng tr\u1ed9i l\u00e0 tr\u1ed9i ho\u00e0n to\u00e0n. Khi cho c\u00e1c c\u00e2y P thu\u1ea7n ch\u1ee7ng kh\u00e1c nhau giao ph\u1ea5n thu \u0111\u01b0\u1ee3c F<\/p>\n1<\/dd>\n. Cho F<\/p>\n
1<\/dd>\ngiao ph\u1ea5n thu \u0111\u01b0\u1ee3c F<\/p>\n
2<\/dd>\nc\u00f3 t\u1ec9 l\u1ec7 ki\u1ec3u h\u00ecnh l\u1eb7n v\u1ec1 c\u1ea3 2 t\u00ednh tr\u1ea1ng chi\u1ebfm 4%.<\/p>\n
Qu\u00e1 tr\u00ecnh ph\u00e1t sinh giao t\u1eed \u0111\u1ef1c v\u00e0 c\u00e1i di\u1ec5n ra nh\u01b0 nhau. Theo l\u00ed thuy\u1ebft, t\u1ec9 l\u1ec7 ki\u1ec3u h\u00ecnh \u0111\u1ed3ng h\u1ee3p tr\u1ed9i v\u1ec1<\/p>\n
c\u1ea3 2 t\u00ednh tr\u1ea1ng l\u00e0<\/p>\n
A.<\/strong>38%. B.<\/strong>4%. C.<\/strong>54%. D.<\/strong>19%.<\/p>\nC\u00e2u 16:<\/strong>(ID: 91376)<\/strong>M\u1ed9t ph\u00e2n t\u1eed ARN \u1edf vi khu\u1ea9n sau qu\u00e1 tr\u00ecnh phi\u00ean m\u00e3 c\u00f3 15% A, 20% G, 30% U, 35 % X. h\u00e3y cho bi\u1ebft \u0111o\u1ea1n ph\u00e2n t\u1eed ADN s\u1ee3i k\u00e9p m\u00e3 h\u00f3a ph\u00e2n t\u1eed ARN n\u00e0y c\u00f3 th\u00e0nh ph\u1ea7n nh\u01b0 th\u1ebf n\u00e0o?<\/p>\nA.<\/strong>15% T; 20% X; 30% A v\u00e0 35 % G. B.<\/strong>15% G; 30% X; 20% A v\u00e0 35 % T.<\/p>\nC.<\/strong>17,5% G; 17,5% X; 32,5% A v\u00e0 32,5 % T. D.<\/strong>22,5% T; 22,5% A; 27,5% G v\u00e0 27,5 % X.<\/p>\nC\u00e2u 17:<\/strong>(ID: 91378)<\/strong>\u1ede ng\u01b0\u1eddi b\u1ec7nh m\u00f9 m\u00e0u do gen l\u1eb7n a v\u00e0 b\u1ec7nh m\u00e1u kh\u00f3 \u0111\u00f4ng do alen l\u1eb7n b n\u1eb1m tr\u00ean NST gi\u1edbi t\u00ednh X quy \u0111\u1ecbnh, alen A v\u00e0 B quy \u0111\u1ecbnh nh\u00ecn b\u00ecnh th\u01b0\u1eddng v\u00e0 m\u00e1u \u0111\u00f4ng b\u00ecnh th\u01b0\u1eddng , kh\u00f4ng c\u00f3 alen t\u01b0\u01a1ng \u1ee9ng tr\u00ean Y. B\u1ec7nh b\u1ea1ch t\u1ea1ng l\u1ea1i do m\u1ed9t gen l\u1eb7n d n\u1eb1m tr\u00ean NST th\u01b0\u1eddng qui \u0111\u1ecbnh, alen D quy \u0111\u1ecbnh da b\u00ecnh th\u01b0\u1eddng. T\u00ednh tr\u1ea1ng m\u00e0u da do 3 gen, m\u1ed7i gen g\u1ed3m 2alen n\u1eb1m tr\u00ean NST th\u01b0\u1eddng t\u01b0\u01a1ng t\u00e1c c\u1ed9ng g\u1ed9p v\u1edbi nhau quy \u0111\u1ecbnh. S\u1ed1 ki\u1ec3u gen t\u1ed1i \u0111a trong qu\u1ea7n th\u1ec3 ng\u01b0\u1eddi \u0111\u1ed1i v\u1edbi 6 gen n\u00f3i tr\u00ean l\u00e0<\/p>\nA.<\/strong>1296 B.<\/strong>1134 C.<\/strong>1053 D.<\/strong>1377.<\/p>\nC\u00e2u 18:<\/strong>(ID: 91383)<\/strong>Theo F.Jac\u00f4p v\u00e0 J.M\u00f4n\u00f4, trong m\u00f4 h\u00ecnh c\u1ea5u tr\u00fac c\u1ee7a op\u00earon Lac, v\u00f9ng v\u1eadn h\u00e0nh (operator) l\u00e0<\/p>\nA.<\/strong>n\u01a1i m\u00e0 ARN p\u00f4limeraza b\u00e1m v\u00e0o v\u00e0 kh\u1edfi \u0111\u1ea7u phi\u00ean m\u00e3 t\u1ed5ng h\u1ee3p n\u00ean ARN th\u00f4ng tin.<\/p>\nB.<\/strong>v\u00f9ng mang th\u00f4ng tin m\u00e3 h\u00f3a c\u1ea5u tr\u00fac pr\u00f4t\u00eain \u1ee9c ch\u1ebf, pr\u00f4t\u00eain n\u00e0y c\u00f3 kh\u1ea3 n\u0103ng \u1ee9c ch\u1ebf qu\u00e1 tr\u00ecnh phi\u00ean m\u00e3.<\/p>\nC.<\/strong>v\u00f9ng khi h\u1ecdat \u0111\u1ed9ng s\u1ebd t\u1ed5ng h\u1ee3p n\u00ean pr\u00f4tein, pr\u00f4tein n\u00e0y tham gia v\u00e0o qu\u00e1 tr\u00ecnh trao \u0111\u1ed5i ch\u1ea5tc\u1ee7a TB h\u00ecnh th\u00e0nh n\u00ean t\u00ednh tr\u1ea1ng.<\/p>\nD.<\/strong>tr\u00ecnh t\u1ef1 nucl\u00ea\u00f4tit \u0111\u1eb7c bi\u1ec7t, t\u1ea1i \u0111\u00f3 pr\u00f4t\u00eain \u1ee9c ch\u1ebf c\u00f3 th\u1ec3 li\u00ean k\u1ebft l\u00e0m ng\u0103n c\u1ea3n s\u1ef1 phi\u00ean m\u00e3.<\/p>\nC\u00e2u 19:<\/strong>(ID: 91384)<\/strong>\u1ede m\u1ed9t lo\u00e0i th\u1ef1c v\u1eadt, t\u00ednh tr\u1ea1ng m\u00e0u hoa do hai gen kh\u00f4ng alen l\u00e0 A v\u00e0 B t\u01b0\u01a1ng t\u00e1c v\u1edbi nhau quy \u0111\u1ecbnh. N\u1ebfu trong ki\u1ec3u gen c\u00f3 c\u1ea3 hai gen tr\u1ed9i A v\u00e0 B th\u00ec cho ki\u1ec3u h\u00ecnh hoa \u0111\u1ecf; n\u1ebfu ch\u1ec9 c\u00f3 m\u1ed9t gen tr\u1ed9i A ho\u1eb7c B hay to\u00e0n b\u1ed9 gen l\u1eb7n th\u00ec cho ki\u1ec3u h\u00ecnh hoa tr\u1eafng. Alen D quy \u0111\u1ecbnh th\u00e2n th\u1ea5p tr\u1ed9i ho\u00e0n to\u00e0n so v\u1edbi alen d quy \u0111\u1ecbnh th\u00e2n cao; alen E quy \u0111\u1ecbnh qu\u1ea3 tr\u00f2n tr\u1ed9i ho\u00e0n to\u00e0n so v\u1edbi alen e quy \u0111\u1ecbnh qu\u1ea3 b\u1ea7u d\u1ee5c. Theo l\u00ed thuy\u1ebft, ph\u00e9p lai AaBbDdEe \u00d7 aabbDdee cho \u0111\u1eddi con c\u00f3 ki\u1ec3u h\u00ecnh hoa \u0111\u1ecf, th\u00e2n cao, qu\u1ea3 b\u1ea7u d\u1ee5c chi\u1ebfm t\u1ec9 l\u1ec7 l\u00e0<\/p>\nA.<\/strong>3,125%. B.<\/strong>9,375%. C.<\/strong>6,25%. D.<\/strong>18,75%.<\/p>\nC\u00e2u 20:<\/strong>(ID: 91390)<\/strong>Cho s\u01a1 \u0111\u00f4\u0300 ph\u1ea3 h\u00ea\u0323 v\u00ea\u0300 m\u1ed9t b\u00ea\u0323nh \u1edf ng\u01b0\u1eddi do gen l\u1eb7n n\u1eb1m tr\u00ean NST th\u01b0\u1eddng quy \u0111\u1ecbnh nh\u01b0 sau :<\/p>\n![](\"http:\/\/img.toanhoc247.com\/picture\/2015\/1020\/hinh-2-1.png\")
<\/strong><\/p>\n\u0110\u00e1p \u00e1n \u0111\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n Sinh n\u0103m 2016- \u0111\u1ec1 s\u1ed1 7<\/strong><\/strong><\/p>\n![](\"http:\/\/img.toanhoc247.com\/picture\/2015\/1020\/hue-giai-7.png\")
<\/strong><\/strong><\/p>\n<\/strong><\/p>\nT\u1ea5t c\u1ea3 n\u1ed9i dung b\u00e0i vi\u1ebft. C\u00e1c em h\u00e3y xem th\u00eam v\u00e0 t\u1ea3i file chi ti\u1ebft t\u1ea1i \u0111\u00e2y:<\/strong>Download<\/p>\n","protected":false},"excerpt":{"rendered":"\u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n Sinh n\u0103m 2016 t\u1ed5 ch\u1ee9c thi l\u1ea7n th\u1ee9 7 bao g\u1ed3m 50 c\u00e2u h\u1ecfi v\u00e0 c\u00f3 \u0111\u00e1p \u00e1n h\u01b0\u1edbng d\u1eabn tr\u1ea3 l\u1eddi b\u00ean d\u01b0\u1edbi Xem th\u00eam: \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n Sinh C\u00e2u 1:(ID: 91317)M\u1ed9t h\u1ed7n h\u1ee3p g\u1ed3m U, G v\u00e0 X v\u1edbi t\u1ec9 l\u1ec7 U: […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[129],"tags":[],"yoast_head":"\n
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Xem th\u00eam: \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n Sinh<\/p>\n<\/div>\n
C\u00e2u 1:<\/strong>(ID: 91317)<\/strong>M\u1ed9t h\u1ed7n h\u1ee3p g\u1ed3m U, G v\u00e0 X v\u1edbi t\u1ec9 l\u1ec7 U: G : X = 2 : 3 : 1. X\u00e1c su\u1ea5t t\u1ea1o ra lo\u1ea1i b\u1ed9 ba c\u00f3 2U v\u00e0 1X t\u1eeb h\u1ed7n h\u1ee3p tr\u00ean l\u00e0<\/p>\n A.<\/strong>1\/54. B.<\/strong>1\/18. C.<\/strong>15\/216. D.<\/strong>125\/216.\u00ad<\/u><\/p>\n C\u00e2u 2:<\/strong>(ID: 91319)<\/strong>M\u1ed9t \u0111o\u1ea1n gen c\u00f3 tr\u00ecnh t\u1ef1 nucl\u00ea\u00f4tit l\u00e0<\/p>\n 3\u2019…AAXGTTGXGAXTGGT…5\u2019<\/strong>(m\u1ea1ch b\u1ed5 sung ) <\/p>\n 5 \u2019…<\/strong>TTGXAAXGXTGAXXA …3\u2019<\/strong>(m\u1ea1ch m\u00e3 g\u1ed1c )<\/p>\n Tr\u00ecnh t\u1ef1 nucl\u00ea\u00f4tit tr\u00ean mARN khi \u0111o\u1ea1n gen tr\u00ean phi\u00ean m\u00e3 s\u1ebd l\u00e0<\/p>\n A.<\/strong>3\u2019\u2026AAXGUUGXGAXUGGU\u20265\u2019. B.<\/strong>5\u2019\u2026AAXGUUGXGAXUGGU\u20263\u2019.<\/p>\n C.<\/strong>5\u2019\u2026UUGXAAXGXUGAXXA\u20263\u2019. D.<\/strong>3\u2019\u2026AAXGTTGXGAXTGGT\u20265\u2019.<\/p>\n C\u00e2u 3:<\/strong>(ID: 91328)<\/strong>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 s\u01a1 \u0111\u1ed3 ph\u1ea3 h\u1ec7 trong m\u1ed9t gia \u0111\u00ecnh v\u1ec1 t\u00ednh tr\u1ea1ng nh\u00f3m m\u00e1u. Bi\u1ebft nh\u00f3m m\u00e1u do 1 gen c\u00f3 3 alen n\u1eb1m tr\u00ean nhi\u1ec5m s\u1eafc th\u1ec3 th\u01b0\u1eddng quy \u0111\u1ecbnh. X\u00e1c su\u1ea5t \u0111\u1ec3 v\u1ee3 nh\u00f3m m\u00e1u A, ch\u1ed3ng nh\u00f3m m\u00e1u B sinh con c\u00f3 nh\u00f3m m\u00e1u O trong s\u01a1 \u0111\u1ed3 ph\u1ea3 h\u1ec7 l\u00e0:<\/p>\n A.<\/strong>1\/12. B.<\/strong>1\/16. C.<\/strong>1\/6. D.<\/strong>1\/4.<\/p>\n C\u00e2u 4:<\/strong>(ID: 91333)<\/strong>M\u1ed7i t\u1ebf b\u00e0o l\u01b0\u1ee1ng b\u1ed9i \u1edf 1 lo\u00e0i c\u00f3 4 c\u1eb7p NST ch\u1ee9a c\u1ea3 th\u1ea3y 283.10<\/p>\n c\u1eb7p nucl\u00ea\u00f4tit. \u1ede k\u00ec gi\u1eefa, chi\u1ec1u d\u00e0i trung b\u00ecnh c\u1ee7a 1 NST l\u00e0 2 mm, th\u00ec c\u00e1c ADN \u0111\u00e3 co ng\u1eafn kho\u1ea3ng<\/p>\n A.<\/strong>1013 l\u1ea7n B.<\/strong>8013 l\u1ea7n C.<\/strong>6013 l\u1ea7n D.<\/strong>4013 l\u1ea7n<\/p>\n C\u00e2u 5:<\/strong>(ID: 91334)<\/strong>Trong m\u1ed9t qu\u1ea7n th\u1ec3 ng\u1eabu ph\u1ed1i x\u00e9t ba gen: gen th\u1ee9 nh\u1ea5t v\u00e0 gen th\u1ee9 hai n\u1eb1m tr\u00ean hai c\u1eb7p nhi\u1ec5m s\u1eafc th\u1ec3 th\u01b0\u1eddng kh\u00e1c nhau, gen th\u1ee9 ba n\u1eb1m tr\u00ean nhi\u1ec5m s\u1eafc th\u1ec3 X c\u00f3 alen t\u01b0\u01a1ng \u1ee9ng tr\u00ean Y (\u1edf v\u00f9ng t\u01b0\u01a1ng \u0111\u1ed3ng c\u1ee7a c\u1ea3 X v\u00e0 Y), gen th\u1ee9 nh\u1ea5t c\u00f3 3 alen, gen th\u1ee9 hai c\u00f3 3 alen, gen th\u1ee9 ba c\u00f3 4 alen. S\u1ed1 ki\u1ec3u gen t\u1ed1i \u0111a v\u1ec1 3 gen tr\u00ean trong qu\u1ea7n th\u1ec3 l\u00e0<\/p>\n A.<\/strong>360. B.<\/strong>936. C.<\/strong>1134. D.<\/strong>504.<\/p>\n C\u00e2u 6:<\/strong>(ID: 91336)<\/strong>Theo quan ni\u1ec7m c\u1ee7a \u0110acuyn, ngu\u1ed3n nguy\u00ean li\u1ec7u ch\u1ee7 y\u1ebfu c\u1ee7a ti\u1ebfn ho\u00e1 l\u00e0<\/p>\n A.<\/strong>\u0111\u1ed9t bi\u1ebfn nhi\u1ec5m s\u1eafc th\u1ec3. B.<\/strong>th\u01b0\u1eddng bi\u1ebfn.<\/p>\n C.<\/strong>\u0111\u1ed9t bi\u1ebfn gen. D.<\/strong>bi\u1ebfn d\u1ecb c\u00e1 th\u1ec3.<\/p>\n C\u00e2u 7:<\/strong>(ID: 91344)<\/strong>\u1ede m\u1ed9t lo\u00e0i th\u1ef1c v\u1eadt, chi\u1ec1u cao c\u00e2y do 5 c\u1eb7p gen kh\u00f4ng alen t\u00e1c \u0111\u1ed9ng c\u1ed9ng g\u1ed9p quy \u0111\u1ecbnh. S\u1ef1 c\u00f3 m\u1eb7t c\u1ee7a m\u1ed7i alen tr\u1ed9i l\u00e0m chi\u1ec1u cao t\u0103ng th\u00eam 5cm. Lai c\u00e2y cao nh\u1ea5t c\u00f3 chi\u1ec1u cao 210cm v\u1edbi c\u00e2y th\u1ea5p nh\u1ea5t \u0111\u01b0\u1ee3c F<\/p>\n c\u00f3 chi\u1ec1u cao trung b\u00ecnh. Cho F<\/p>\n giao ph\u1ea5n v\u1edbi nhau th\u00ec t\u1ec9 l\u1ec7 nh\u00f3m c\u00e2y c\u00f3 chi\u1ec1u cao 185cm \u1edf F<\/p>\n l\u00e0<\/p>\n A.<\/strong>108\/256. B.<\/strong>63\/256. C.<\/strong>126\/256. D.<\/strong>121\/256.<\/p>\n C\u00e2u 8:<\/strong>(ID: 91347)<\/strong>\u1ede m\u1ed9t lo\u00e0i th\u1ef1c v\u1eadt, alen A quy \u0111\u1ecbnh th\u00e2n cao tr\u1ed9i ho\u00e0n to\u00e0n so v\u1edbi alen a quy \u0111\u1ecbnh th\u00e2n th\u1ea5p; alen B quy \u0111\u1ecbnh hoa t\u00edm tr\u1ed9i ho\u00e0n to\u00e0n so v\u1edbi alen b quy \u0111\u1ecbnh hoa tr\u1eafng; alen D quy \u0111\u1ecbnh qu\u1ea3 \u0111\u1ecf tr\u1ed9i ho\u00e0n to\u00e0n v\u1edbi alen d quy \u0111\u1ecbnh qu\u1ea3 v\u00e0ng; alen E quy \u0111\u1ecbnh qu\u1ea3 tr\u00f2n tr\u1ed9i ho\u00e0n to\u00e0n so v\u1edbi alen e quy \u0111\u1ecbnh qu\u1ea3 d\u00e0i. Bi\u1ebft gi\u1ea3m ph\u00e2n b\u00ecnh th\u01b0\u1eddng, qu\u00e1 tr\u00ecnh ph\u00e1t sinh giao t\u1eed \u0111\u1ef1c v\u00e0 giao t\u1eed c\u00e1i \u0111\u1ec1u x\u1ea3y ra ho\u00e1n v\u1ecb gen gi\u1eefa c\u00e1c alen B v\u00e0 b v\u1edbi t\u1ea7n s\u1ed1 20%, gi\u1eefa c\u00e1c alen E v\u00e0 e v\u1edbi t\u1ea7n s\u1ed1 40%.<\/p>\n Ph\u00e9p lai (P) x cho F<\/p>\n c\u00f3 ki\u1ec3u gen d\u1ecb h\u1ee3p c\u1ea3 4 c\u1eb7p gen l\u00e0<\/p>\n A.<\/strong>4,16%. B.<\/strong>8.84% C.<\/strong>38,94% D.<\/strong>2,88%<\/p>\n C\u00e2u 9:<\/strong>(ID: 91349)<\/strong>\u1ede ng\u01b0\u1eddi, b\u1ec7nh b\u1ea1ch t\u1ea1ng do m\u1ed9t alen \u0111\u1ed9t bi\u1ebfn l\u1eb7n. Nh\u1eefng ng\u01b0\u1eddi b\u1ea1ch t\u1ea1ng l\u1ea5y nhau th\u01b0\u1eddng sinh ra 100% s\u1ed1 con b\u1ecb b\u1ec7nh b\u1ea1ch t\u1ea1ng. Tuy nhi\u00ean trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, hai v\u1ee3 ch\u1ed3ng b\u1ea1ch t\u1ea1ng l\u1ea5y nhau l\u1ea1i sinh ra ng\u01b0\u1eddi con b\u00ecnh th\u01b0\u1eddng. C\u00f3 th\u1ec3 gi\u1ea3i th\u00edch c\u01a1 s\u1edf c\u1ee7a hi\u1ec7n t\u01b0\u1ee3ng tr\u00ean nh\u01b0 sau<\/p>\n A.<\/strong>gen b\u1ea1ch t\u1ea1ng \u1edf m\u1eb9 v\u00e0 b\u1ed1 kh\u00e1c nhau n\u00ean \u0111\u00e3 t\u01b0\u01a1ng t\u00e1c gen cho con b\u00ecnh th\u01b0\u1eddng.<\/p>\n B.<\/strong>\u0111\u00e3 c\u00f3 s\u1ef1 \u0111\u1ed9t bi\u1ebfn gen l\u1eb7n th\u00e0nh gen tr\u1ed9i n\u00ean cho con kh\u00f4ng b\u1ecb b\u1ec7nh.<\/p>\n C.<\/strong>do m\u00f4i tr\u01b0\u1eddng kh\u00f4ng th\u00edch h\u1ee3p n\u00ean th\u1ec3 \u0111\u1ed9t bi\u1ebfn kh\u00f4ng bi\u1ec3u hi\u1ec7n b\u1ea1ch t\u1ea1ng.<\/p>\n D.<\/strong>do \u0111\u1ed9t bi\u1ebfn nhi\u1ec5m s\u1eafc th\u1ec3 l\u00e0m m\u1ea5t \u0111o\u1ea1n ch\u1ee9a alen b\u1ea1ch t\u1ea1ng n\u00ean con b\u00ecnh th\u01b0\u1eddng.<\/p>\n C\u00e2u 10:<\/strong>(ID: 91350)<\/strong>Cho nh\u1eefng v\u00ed d\u1ee5 sau:<\/p>\n (1) C\u00e1nh d\u01a1i v\u00e0 c\u00e1nh b\u01b0\u1edbm<\/p>\n (2) V\u00e2y ng\u1ef1c c\u1ee7a c\u00e1 voi v\u00e0 tay kh\u1ec9.<\/p>\n (3) Mang c\u00e1 v\u00e0 mang t\u00f4m.<\/p>\n (4) Chi tr\u01b0\u1edbc c\u1ee7a th\u00fa v\u00e0 tay ng\u01b0\u1eddi.<\/p>\n Nh\u1eefng v\u00ed d\u1ee5 v\u1ec1 c\u01a1 quan t\u01b0\u01a1ng \u0111\u1ed3ng l\u00e0<\/p>\n A.<\/strong>(1) v\u00e0 (2). B.<\/strong>(2) v\u00e0 (4). C.<\/strong>(1) v\u00e0 (4). D.<\/strong>(1) v\u00e0 (3).<\/p>\n C\u00e2u 11:<\/strong>(ID: 91364)<\/strong>M\u1ed9t qu\u1ea7n th\u1ec3 th\u1ef1c v\u1eadt c\u00f3 320 c\u00e1 th\u1ec3 c\u00f3 ki\u1ec3u gen AA, 81 c\u00e1 th\u1ec3 c\u00f3 ki\u1ec3u gen aa v\u00e0 403 c\u00e1 th\u1ec3 c\u00f3 ki\u1ec3u gen Aa . Sau 5 th\u1ebf h\u1ec7 giao ph\u1ed1i ng\u1eabu nhi\u00ean th\u00ec t\u1ea7n s\u1ed1 ki\u1ec3u gen Aa \u1edf th\u1ebf h\u1ec7 sau qu\u1ea7n th\u1ec3 n\u00e0y s\u1ebd l\u00e0 bao nhi\u00eau? Gi\u1ea3 s\u1eed qu\u1ea7n th\u1ec3 kh\u00f4ng ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a c\u00e1c nh\u00e2n t\u1ed1 ti\u1ebfn h\u00f3a<\/p>\n A.<\/strong>1,56% B.<\/strong>48,15% C.<\/strong>42, 20% D.<\/strong>45,50%<\/p>\n C\u00e2u 12:<\/strong>(ID: 91369)<\/strong>\u1ede m\u1ed9t lo\u00e0i th\u1ef1c v\u1eadt, x\u00e9t m\u1ed9t c\u00e2y F<\/p>\n c\u00f3 ki\u1ec3u gen ( ) t\u1ef1 th\u1ee5 ph\u1ea5n, trong qu\u00e1 tr\u00ecnh gi\u1ea3m ph\u00e2n t\u1ea1o giao t\u1eed 40 % t\u1ebf b\u00e0o sinh h\u1ea1t ph\u1ea5n x\u1ea3y ra ho\u00e1n v\u1ecb gen \u1edf c\u1eb7p NST mang gen A, B; 20% t\u1ebf b\u00e0o sinh h\u1ea1t ph\u1ea5n x\u1ea3y ra ho\u00e1n v\u1ecb gen \u1edf c\u1eb7p NST mang gen D, E. Bi\u1ebft r\u1eb1ng m\u1ed7i gen quy \u0111\u1ecbnh m\u1ed9t t\u00ednh tr\u1ea1ng, gen tr\u1ed9i ho\u00e0n to\u00e0n v\u00e0 ho\u00e1n v\u1ecb gen x\u1ea3y ra trong qu\u00e1 tr\u00ecnh ph\u00e1t sinh giao t\u1eed \u0111\u1ef1c v\u00e0 c\u00e1i v\u1edbi t\u1ea7n s\u1ed1 b\u1eb1ng nhau. T\u00ednh theo l\u00ed thuy\u1ebft th\u00ec t\u1ec9 l\u1ec7 c\u00e2y F<\/p>\n c\u00f3 ki\u1ec3u h\u00ecnh A-B-D-ee l\u00e0<\/p>\n A.<\/strong>12,06 %. B.<\/strong>15,84 %. C.<\/strong>16,335 %. D.<\/strong>14,16 %.<\/p>\n C\u00e2u 13:<\/strong>(ID: 91371)<\/strong>M\u1ed9t t\u1ebf b\u00e0o sinh d\u01b0\u1ee1ng c\u1ee7a m\u1ed9t lo\u00e0i c\u00f3 b\u1ed9 nhi\u1ec5m s\u1eafc th\u1ec3 k\u00ed hi\u1ec7u l\u00e0 AaBbDdEe. Trong qu\u00e1 tr\u00ecnh ph\u00e2n b\u00e0o, t\u1ebf b\u00e0o n\u00e0y b\u1ecb r\u1ed1i lo\u1ea1n ph\u00e2n li \u1edf 1 nhi\u1ec5m s\u1eafc th\u1ec3 k\u00e9p trong c\u1eb7p Dd s\u1ebd t\u1ea1o ra 2 t\u1ebf b\u00e0o con c\u00f3 k\u00ed hi\u1ec7u nhi\u1ec5m s\u1eafc th\u1ec3 l\u00e0<\/p>\n A.<\/strong>AaBbDDdEe v\u00e0 AaBbddEe. B.<\/strong>AaBbDDddEe v\u00e0 AaBbEe.<\/p>\n C.<\/strong>AaBbDddEe v\u00e0 AaBbDEe. D.<\/strong>AaBbDddEe v\u00e0 AaBbddEe.<\/p>\n C\u00e2u 14:<\/strong>(ID: 91373)<\/strong>C\u00e1c nh\u00e2n t\u1ed1 ti\u1ebfn ho\u00e1 n\u00e0o sau \u0111\u00e2y v\u1eeba l\u00e0m thay \u0111\u1ed5i t\u1ea7n s\u1ed1 alen v\u1eeba c\u00f3 th\u1ec3 l\u00e0m phong ph\u00fa v\u1ed1n gen c\u1ee7a qu\u1ea7n th\u1ec3?<\/p>\n A.<\/strong>Ch\u1ecdn l\u1ecdc t\u1ef1 nhi\u00ean v\u00e0 giao ph\u1ed1i kh\u00f4ng ng\u1eabu nhi\u00ean.<\/p>\n B.<\/strong>Ch\u1ecdn l\u1ecdc t\u1ef1 nhi\u00ean v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 ng\u1eabu nhi\u00ean.<\/p>\n C.<\/strong>\u0110\u1ed9t bi\u1ebfn v\u00e0 di – nh\u1eadp gen.<\/p>\n D.<\/strong>Giao ph\u1ed1i ng\u1eabu nhi\u00ean v\u00e0 c\u00e1c c\u01a1 ch\u1ebf c\u00e1ch li.<\/p>\n C\u00e2u 15:<\/strong>(ID: 91375)<\/strong>\u1ede m\u1ed9t lo\u00e0i th\u1ef1c v\u1eadt, hai c\u1eb7p gen Aa v\u00e0 Bb quy \u0111\u1ecbnh 2 t\u00ednh tr\u1ea1ng t\u01b0\u01a1ng ph\u1ea3n, gi\u00e1 tr\u1ecb th\u00edch nghi c\u1ee7a c\u00e1c alen \u0111\u1ec1u nh\u01b0 nhau, t\u00ednh tr\u1ea1ng tr\u1ed9i l\u00e0 tr\u1ed9i ho\u00e0n to\u00e0n. Khi cho c\u00e1c c\u00e2y P thu\u1ea7n ch\u1ee7ng kh\u00e1c nhau giao ph\u1ea5n thu \u0111\u01b0\u1ee3c F<\/p>\n . Cho F<\/p>\n giao ph\u1ea5n thu \u0111\u01b0\u1ee3c F<\/p>\n c\u00f3 t\u1ec9 l\u1ec7 ki\u1ec3u h\u00ecnh l\u1eb7n v\u1ec1 c\u1ea3 2 t\u00ednh tr\u1ea1ng chi\u1ebfm 4%.<\/p>\n Qu\u00e1 tr\u00ecnh ph\u00e1t sinh giao t\u1eed \u0111\u1ef1c v\u00e0 c\u00e1i di\u1ec5n ra nh\u01b0 nhau. Theo l\u00ed thuy\u1ebft, t\u1ec9 l\u1ec7 ki\u1ec3u h\u00ecnh \u0111\u1ed3ng h\u1ee3p tr\u1ed9i v\u1ec1<\/p>\n c\u1ea3 2 t\u00ednh tr\u1ea1ng l\u00e0<\/p>\n A.<\/strong>38%. B.<\/strong>4%. C.<\/strong>54%. D.<\/strong>19%.<\/p>\n C\u00e2u 16:<\/strong>(ID: 91376)<\/strong>M\u1ed9t ph\u00e2n t\u1eed ARN \u1edf vi khu\u1ea9n sau qu\u00e1 tr\u00ecnh phi\u00ean m\u00e3 c\u00f3 15% A, 20% G, 30% U, 35 % X. h\u00e3y cho bi\u1ebft \u0111o\u1ea1n ph\u00e2n t\u1eed ADN s\u1ee3i k\u00e9p m\u00e3 h\u00f3a ph\u00e2n t\u1eed ARN n\u00e0y c\u00f3 th\u00e0nh ph\u1ea7n nh\u01b0 th\u1ebf n\u00e0o?<\/p>\n A.<\/strong>15% T; 20% X; 30% A v\u00e0 35 % G. B.<\/strong>15% G; 30% X; 20% A v\u00e0 35 % T.<\/p>\n C.<\/strong>17,5% G; 17,5% X; 32,5% A v\u00e0 32,5 % T. D.<\/strong>22,5% T; 22,5% A; 27,5% G v\u00e0 27,5 % X.<\/p>\n C\u00e2u 17:<\/strong>(ID: 91378)<\/strong>\u1ede ng\u01b0\u1eddi b\u1ec7nh m\u00f9 m\u00e0u do gen l\u1eb7n a v\u00e0 b\u1ec7nh m\u00e1u kh\u00f3 \u0111\u00f4ng do alen l\u1eb7n b n\u1eb1m tr\u00ean NST gi\u1edbi t\u00ednh X quy \u0111\u1ecbnh, alen A v\u00e0 B quy \u0111\u1ecbnh nh\u00ecn b\u00ecnh th\u01b0\u1eddng v\u00e0 m\u00e1u \u0111\u00f4ng b\u00ecnh th\u01b0\u1eddng , kh\u00f4ng c\u00f3 alen t\u01b0\u01a1ng \u1ee9ng tr\u00ean Y. B\u1ec7nh b\u1ea1ch t\u1ea1ng l\u1ea1i do m\u1ed9t gen l\u1eb7n d n\u1eb1m tr\u00ean NST th\u01b0\u1eddng qui \u0111\u1ecbnh, alen D quy \u0111\u1ecbnh da b\u00ecnh th\u01b0\u1eddng. T\u00ednh tr\u1ea1ng m\u00e0u da do 3 gen, m\u1ed7i gen g\u1ed3m 2alen n\u1eb1m tr\u00ean NST th\u01b0\u1eddng t\u01b0\u01a1ng t\u00e1c c\u1ed9ng g\u1ed9p v\u1edbi nhau quy \u0111\u1ecbnh. S\u1ed1 ki\u1ec3u gen t\u1ed1i \u0111a trong qu\u1ea7n th\u1ec3 ng\u01b0\u1eddi \u0111\u1ed1i v\u1edbi 6 gen n\u00f3i tr\u00ean l\u00e0<\/p>\n A.<\/strong>1296 B.<\/strong>1134 C.<\/strong>1053 D.<\/strong>1377.<\/p>\n C\u00e2u 18:<\/strong>(ID: 91383)<\/strong>Theo F.Jac\u00f4p v\u00e0 J.M\u00f4n\u00f4, trong m\u00f4 h\u00ecnh c\u1ea5u tr\u00fac c\u1ee7a op\u00earon Lac, v\u00f9ng v\u1eadn h\u00e0nh (operator) l\u00e0<\/p>\n A.<\/strong>n\u01a1i m\u00e0 ARN p\u00f4limeraza b\u00e1m v\u00e0o v\u00e0 kh\u1edfi \u0111\u1ea7u phi\u00ean m\u00e3 t\u1ed5ng h\u1ee3p n\u00ean ARN th\u00f4ng tin.<\/p>\n B.<\/strong>v\u00f9ng mang th\u00f4ng tin m\u00e3 h\u00f3a c\u1ea5u tr\u00fac pr\u00f4t\u00eain \u1ee9c ch\u1ebf, pr\u00f4t\u00eain n\u00e0y c\u00f3 kh\u1ea3 n\u0103ng \u1ee9c ch\u1ebf qu\u00e1 tr\u00ecnh phi\u00ean m\u00e3.<\/p>\n C.<\/strong>v\u00f9ng khi h\u1ecdat \u0111\u1ed9ng s\u1ebd t\u1ed5ng h\u1ee3p n\u00ean pr\u00f4tein, pr\u00f4tein n\u00e0y tham gia v\u00e0o qu\u00e1 tr\u00ecnh trao \u0111\u1ed5i ch\u1ea5tc\u1ee7a TB h\u00ecnh th\u00e0nh n\u00ean t\u00ednh tr\u1ea1ng.<\/p>\n D.<\/strong>tr\u00ecnh t\u1ef1 nucl\u00ea\u00f4tit \u0111\u1eb7c bi\u1ec7t, t\u1ea1i \u0111\u00f3 pr\u00f4t\u00eain \u1ee9c ch\u1ebf c\u00f3 th\u1ec3 li\u00ean k\u1ebft l\u00e0m ng\u0103n c\u1ea3n s\u1ef1 phi\u00ean m\u00e3.<\/p>\n C\u00e2u 19:<\/strong>(ID: 91384)<\/strong>\u1ede m\u1ed9t lo\u00e0i th\u1ef1c v\u1eadt, t\u00ednh tr\u1ea1ng m\u00e0u hoa do hai gen kh\u00f4ng alen l\u00e0 A v\u00e0 B t\u01b0\u01a1ng t\u00e1c v\u1edbi nhau quy \u0111\u1ecbnh. N\u1ebfu trong ki\u1ec3u gen c\u00f3 c\u1ea3 hai gen tr\u1ed9i A v\u00e0 B th\u00ec cho ki\u1ec3u h\u00ecnh hoa \u0111\u1ecf; n\u1ebfu ch\u1ec9 c\u00f3 m\u1ed9t gen tr\u1ed9i A ho\u1eb7c B hay to\u00e0n b\u1ed9 gen l\u1eb7n th\u00ec cho ki\u1ec3u h\u00ecnh hoa tr\u1eafng. Alen D quy \u0111\u1ecbnh th\u00e2n th\u1ea5p tr\u1ed9i ho\u00e0n to\u00e0n so v\u1edbi alen d quy \u0111\u1ecbnh th\u00e2n cao; alen E quy \u0111\u1ecbnh qu\u1ea3 tr\u00f2n tr\u1ed9i ho\u00e0n to\u00e0n so v\u1edbi alen e quy \u0111\u1ecbnh qu\u1ea3 b\u1ea7u d\u1ee5c. Theo l\u00ed thuy\u1ebft, ph\u00e9p lai AaBbDdEe \u00d7 aabbDdee cho \u0111\u1eddi con c\u00f3 ki\u1ec3u h\u00ecnh hoa \u0111\u1ecf, th\u00e2n cao, qu\u1ea3 b\u1ea7u d\u1ee5c chi\u1ebfm t\u1ec9 l\u1ec7 l\u00e0<\/p>\n A.<\/strong>3,125%. B.<\/strong>9,375%. C.<\/strong>6,25%. D.<\/strong>18,75%.<\/p>\n C\u00e2u 20:<\/strong>(ID: 91390)<\/strong>Cho s\u01a1 \u0111\u00f4\u0300 ph\u1ea3 h\u00ea\u0323 v\u00ea\u0300 m\u1ed9t b\u00ea\u0323nh \u1edf ng\u01b0\u1eddi do gen l\u1eb7n n\u1eb1m tr\u00ean NST th\u01b0\u1eddng quy \u0111\u1ecbnh nh\u01b0 sau :<\/p>\n \u0110\u00e1p \u00e1n \u0111\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n Sinh n\u0103m 2016- \u0111\u1ec1 s\u1ed1 7<\/strong><\/strong><\/p>\n <\/strong><\/p>\n T\u1ea5t c\u1ea3 n\u1ed9i dung b\u00e0i vi\u1ebft. C\u00e1c em h\u00e3y xem th\u00eam v\u00e0 t\u1ea3i file chi ti\u1ebft t\u1ea1i \u0111\u00e2y:<\/strong>Download<\/p>\n","protected":false},"excerpt":{"rendered":" \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n Sinh n\u0103m 2016 t\u1ed5 ch\u1ee9c thi l\u1ea7n th\u1ee9 7 bao g\u1ed3m 50 c\u00e2u h\u1ecfi v\u00e0 c\u00f3 \u0111\u00e1p \u00e1n h\u01b0\u1edbng d\u1eabn tr\u1ea3 l\u1eddi b\u00ean d\u01b0\u1edbi Xem th\u00eam: \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n Sinh C\u00e2u 1:(ID: 91317)M\u1ed9t h\u1ed7n h\u1ee3p g\u1ed3m U, G v\u00e0 X v\u1edbi t\u1ec9 l\u1ec7 U: […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[129],"tags":[],"yoast_head":"\n<\/p>\n<\/strong><\/p>\n
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