\u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n Sinh n\u0103m 2016 t\u1ed5 ch\u1ee9c thi l\u1ea7n th\u1ee9 12 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

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Xem th\u00eam: \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n Sinh<\/p>\n<\/div>\n

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C\u00e2u 1.(ID:83496<\/strong>) Trong ch\u1ecdn gi\u1ed1ng ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 lo\u1ea1i kh\u1ecfi nhi\u1ec5m s\u1eafc th\u1ec3 nh\u1eefng gen kh\u00f4ng mong mu\u1ed1n do \u00e1p d\u1ee5ng hi\u1ec7n t\u01b0\u1ee3ng<\/p>\n

A. <\/strong>Chuy\u1ec3n \u0111o\u1ea1n gen<\/p>\n

B.<\/strong> L\u1eb7p \u0111o\u1ea1n<\/p>\n

C. <\/strong>M\u1ea5t \u0111o\u1ea1n nh\u1ecf<\/p>\n

D. <\/strong>\u0110\u1ea3o \u0111o\u1ea1n<\/p>\n

C\u00e2u 2.(ID:83497<\/strong>) D\u1ea1ng \u0111\u1ed9t bi\u1ebfn n\u00e0o sau \u0111\u00e2y l\u00e0 \u0111\u1ed9t bi\u1ebfn sai ngh\u0129a?<\/p>\n

A. <\/strong>\u0110\u1ed9t bi\u1ebfn thay th\u1ebf 1 c\u1eb7p nucleotit l\u00e0m thay \u0111\u1ed5i aa \u1edf chu\u1ed7i polipeptit<\/p>\n

B. <\/strong>\u0110\u1ed9t bi\u1ebfn m\u1ea5t ho\u1eb7c th\u00eam 1 c\u1eb7p nucleotit l\u00e0m thay \u0111\u1ed5i nhi\u1ec1u aa \u1edf chu\u1ed7i polipeptit<\/p>\n

C. <\/strong>\u0110\u1ed9t bi\u1ebfn thay th\u1ebf 1 c\u1eb7p nucleotit kh\u00f4ng l\u00e0m thay \u0111\u1ed5i aa \u1edf chu\u1ed7i polipeptit<\/p>\n

D. <\/strong> \u0110\u1ed9t bi\u1ebfn gen l\u00e0m xu\u1ea5t hi\u1ec7n m\u00e3 k\u1ebft th\u00fac<\/p>\n

C\u00e2u 3.(ID:83498<\/strong>) V\u1ee3 v\u00e0 ch\u1ed3ng \u0111\u1ec1u thu\u1ed9c nh\u00f3m m\u00e1u A, \u0111\u1ee9a con \u0111\u1ea7u c\u1ee7a h\u1ecd l\u00e0 trai m\u00e1u O, con th\u1ee9 l\u00e0 g\u00e1i m\u00e1u A.<\/strong> Ng\u01b0\u1eddi con g\u00e1i c\u1ee7a h\u1ecd k\u1ebft h\u00f4n v\u1edbi ng\u01b0\u1eddi ch\u1ed3ng nh\u00f3m m\u00e1u AB. X\u00e1c su\u1ea5t \u0111\u1ec3 c\u1eb7p v\u1ee3 ch\u1ed3ng n\u00e0y sinh 2 ng\u01b0\u1eddi con kh\u00f4ng c\u00f9ng gi\u1edbi t\u00ednh v\u00e0 kh\u00f4ng c\u00f9ng nh\u00f3m m\u00e1u l\u00e0 bao nhi\u00eau?<\/p>\n

A.<\/strong> 9\/32      B.<\/strong> 11\/36     C.<\/strong> 22\/36      D.<\/strong> 9\/16<\/p>\n

C\u00e2u 4.(ID:83499<\/strong>) Gen \u0111a hi\u1ec7u l\u00e0<\/p>\n

A. <\/strong>Gen t\u1ea1o ra s\u1ea3n ph\u1ea9m v\u1edbi hi\u1ec7u qu\u1ea3 cao, ho\u1ea1t \u0111\u1ed9ng t\u1ed1t<\/p>\n

B. <\/strong>Gen t\u1ea1o ra nhi\u1ec1u lo\u1ea1i mARN<\/p>\n

C. <\/strong>Gen m\u00e0 s\u1ea3n ph\u1ea9m c\u1ee7a n\u00f3 \u1ea3nh h\u01b0\u1edfng t\u1edbi nhi\u1ec1u t\u00ednh tr\u1ea1ng kh\u00e1c nhau<\/p>\n

D. <\/strong>Gen m\u00e0 \u0111i\u1ec1u khi\u1ec3n s\u1ef1 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a nhi\u1ec1u gen kh\u00e1c nhau, t\u1ea1o ra s\u1ea3n ph\u1ea9m kh\u00e1c nhau<\/p>\n

C\u00e2u 5.(ID:83500)<\/strong> \u0110\u1ec3 c\u00f3 th\u1ec3 t\u1ea1o ra m\u1ed9t c\u00e0nh t\u1ee9 b\u1ed9i tr\u00ean c\u00e2y l\u01b0\u1ee1ng b\u1ed9i, \u0111\u00e3 x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng<\/p>\n

A. <\/strong>Kh\u00f4ng ph\u00e2n li c\u1ee7a to\u00e0n b\u1ed9 NST 2n trong nguy\u00ean ph\u00e2n c\u1ee7a t\u1ebf b\u00e0o xoma \u1edf \u0111\u1ec9nh sinh tr\u01b0\u1edfng c\u1ee7a c\u00e0nh c\u00e2y<\/p>\n

B.<\/strong> Kh\u00f4ng ph\u00e2n li c\u1ee7a to\u00e0n b\u1ed9 NST 2n trong gi\u1ea3m ph\u00e2n c\u1ee7a t\u1ebf b\u00e0o sinh d\u1ee5c t\u1ea1o giao t\u1eed 2n, qua th\u1ee5 tinh t\u1ea1o ra th\u1ec3 t\u1ee9 b\u1ed9i<\/p>\n

C. <\/strong>Kh\u00f4ng ph\u00e2n li c\u1ee7a to\u00e0n b\u1ed9 NST 2n trong nguy\u00ean ph\u00e2n c\u1ee7a t\u1ebf b\u00e0o xoma t\u1ea1o ra t\u1ebf b\u00e0o 4n<\/p>\n

D. <\/strong>Kh\u00f4ng ph\u00e2n li c\u1ee7a to\u00e0n b\u1ed9 NST 2n trong l\u1ea7n nguy\u00ean ph\u00e2n \u0111\u1ea7u ti\u00ean c\u1ee7a h\u1ee3p t\u1eed<\/p>\n

C\u00e2u 6:(ID:83501<\/strong>) \u0110i\u1ec1u n\u00e0o d\u01b0\u1edbi \u0111\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 \u0111i\u1ec1u ki\u1ec7n nghi\u1ec7m \u0111\u00fang \u0111\u1ecbnh lu\u1eadt Hac\u0111i \u2013 Vanbec<\/p>\n

A. <\/strong>Kh\u00f4ng c\u00f3 ch\u1ecdn l\u1ecdc t\u1ef1 nhi\u00ean, qu\u1ea7n th\u1ec3 \u0111\u1ee7 l\u1edbn \u0111\u1ec3 ng\u1eabu ph\u1ed1i.<\/p>\n

B. <\/strong>S\u1ee9c s\u1ed1ng v\u00e0 s\u1ee9c sinh s\u1ea3n c\u1ee7a c\u00e1c th\u1ec3 \u0111\u1ed3ng h\u1ee3p, d\u1ecb h\u1ee3p l\u00e0 nh\u01b0 nhau.<\/p>\n

C. <\/strong>Kh\u00f4ng c\u00f3 s\u1ef1 di nh\u1eadp c\u1ee7a c\u00e1c gen l\u1ea1 v\u00e0o qu\u1ea7n th\u1ec3.<\/p>\n

D. <\/strong>S\u1ed1 alen c\u1ee7a m\u1ed9t gen n\u00e0o \u0111\u00f3 \u0111\u01b0\u1ee3c t\u0103ng l\u00ean.<\/p>\n

C\u00e2u 7:(ID:83502<\/strong>) M\u1ee9c ph\u1ea3n \u1ee9ng c\u1ee7a m\u1ed9t ki\u1ec3u gen \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1eb1ng<\/p>\n

A.<\/strong> S\u1ed1 alen c\u00f3 th\u1ec3 c\u00f3 trong ki\u1ec3u gen \u0111\u00f3<\/p>\n

B. <\/strong>S\u1ed1 ki\u1ec3u h\u00ecnh c\u00f3 th\u1ec3 c\u00f3 ki\u1ec3u gen \u0111\u00f3<\/p>\n

C. <\/strong>S\u1ed1 ki\u1ec3u gen c\u00f3 th\u1ec3 bi\u1ebfn \u0111\u1ed5i t\u1eeb ki\u1ec3u gen \u0111\u00f3<\/p>\n

D.<\/strong> S\u1ed1 c\u00e1c th\u1ec3 c\u00f3 c\u00f9ng m\u1ed9t ki\u1ec3u gen \u0111\u00f3.<\/p>\n

C\u00e2u 8:(ID:83503<\/strong>) Cho c\u00e1c bi\u1ec7n ph\u00e1p sau:<\/p>\n

(1) \u0110\u01b0a th\u00eam m\u1ed9t gen l\u1ea1 v\u00e0o h\u1ec7 gen.<\/p>\n

(2) L\u00e0m bi\u1ebfn \u0111\u1ed5i m\u1ed9t gen \u0111\u00e3 c\u00f3 s\u1eb5n trong h\u1ec7 gen<\/p>\n

(3) G\u00e2y \u0111\u1ed9t bi\u1ebfn \u0111a b\u1ed9i \u1edf c\u00e2y tr\u1ed3ng<\/p>\n

(4) C\u1ea5y truy\u1ec1n ph\u00f4i \u1edf \u0111\u1ed9ng v\u1eadt<\/p>\n

(5) Lo\u1ea1i b\u1ecf ho\u1eb7c l\u00e0m b\u1ea5t ho\u1ea1t 1 gen n\u00e0o \u0111\u00f3 trong h\u1ec7 gen.<\/p>\n

Ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 t\u1ea1o ra sinh v\u1eadt bi\u1ebfn \u0111\u1ed5i gen b\u1eb1ng c\u00e1c bi\u1ec7n ph\u00e1p<\/p>\n

A.<\/strong> (2), (4), (5)      B.<\/strong> (1), (2), (5)    C.<\/strong> (1), (4), (5)      D.<\/strong> (1), (2), (4).<\/p>\n

C\u00e2u 9.(ID:83504<\/strong>) M\u1ed9t ph\u00e2n t\u1eed mARN ch\u1ec9 ch\u1ee9a 3 lo\u1ea1i A, U v\u00e0 G. Nh\u00f3m c\u00e1c b\u1ed9 ba n\u00e0o sau \u0111\u00e2y c\u00f3 th\u1ec3 c\u00f3 tr\u00ean m\u1ea1ch b\u1ed5 sung c\u1ee7a gen \u0111\u00e3 phi\u00ean m\u00e3 ra mARN n\u00f3i tr\u00ean?<\/p>\n

A. <\/strong>TAG, GAA, AAT, ATG.<\/p>\n

B. <\/strong>ATX, TAG, GXA, GAA.<\/strong><\/p>\n

C. <\/strong>AAG, GTT, TXX, XAA.<\/strong><\/p>\n

D. <\/strong>AAA, XXA, TAA, TXX.<\/p>\n

C\u00e2u 10.(ID:83505<\/strong>) \u1ede ru\u1ed3i gi\u1ea5m A qui \u0111\u1ecbnh m\u1eaft \u0111\u1ecf l\u00e0 tr\u1ed9i ho\u00e0n to\u00e0n so v\u1edbi a qui \u0111\u1ecbnh m\u1eaft tr\u1eafng. Cho c\u00e1c c\u00e1 th\u1ec3 ru\u1ed3i gi\u1ea5m \u0111\u1ef1c v\u00e0 ch\u1ec9 c\u00f3 5 ki\u1ec3u gen kh\u00e1c nhau giao ph\u1ed1i t\u1ef1 do ( s\u1ed1 l\u01b0\u1ee3ng c\u00e1 th\u1ec3 \u1edf m\u1ed7i ki\u1ec3u gen l\u00e0 nh\u01b0 nhau). T\u1ec9 l\u1ec7 ph\u00e2n li ki\u1ec3u h\u00ecnh \u1edf \u0111\u1eddi lai l\u00e0:<\/p>\n

A. <\/strong>62,5% m\u1eaft \u0111\u1ecf; 37,5% m\u1eaft tr\u1eafng.<\/p>\n

B. <\/strong>56,25% m\u1eaft \u0111\u1ecf; 43,75% m\u1eaft tr\u1eafng<\/p>\n

C. <\/strong>75% m\u1eaft \u0111\u1ecf : 25% m\u1eaft tr\u1eafng<\/p>\n

D. <\/strong>50% m\u1eaft \u0111\u1ecf : 50% m\u1eaft tr\u1eafng<\/p>\n

C\u00e2u 11:(ID:83506<\/strong>) cho bi\u1ebft c\u00e1c c\u1eb7p gen n\u1eb1m tr\u00ean c\u00e1c c\u1eb7p nhi\u1ec5m s\u1eafc th\u1ec3 kh\u00e1c nhau. Theo l\u00ed thuy\u1ebft ph\u00e9p lai AaBbDd x AabbDD thu \u0111\u01b0\u1ee3c \u1edf \u0111\u1eddi con c\u00f3 s\u1ed1 c\u00e1 th\u1ec3 mang ki\u1ec3u gen c\u00f3 \u00edt nh\u1ea5t m\u1ed9t c\u1eb7p gen d\u1ecb h\u1ee3p chi\u1ebfm t\u1ec9 l\u1ec7:<\/p>\n<\/div>\n

A.<\/strong> 37,5%         <\/span><\/p>\n

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B.<\/strong> 87,5%      <\/p>\n

C.<\/strong> 50%   <\/p>\n

D.<\/strong> 12,5%<\/p>\n<\/div>\n

C\u00e2u 12.(ID:83507<\/strong>) Cho bi\u1ebft 1 gen quy \u0111\u1ecbnh 1 t\u00ednh tr\u1ea1ng, tr\u1ed9i l\u1eb7n ho\u00e0n to\u00e0n, qu\u00e1 tr\u00ecnh gi\u1ea3m ph\u00e2n kh\u00f4ng x\u1ea3y ra \u0111\u1ed9t bi\u1ebfn. Th\u1ef1c hi\u1ec7n ph\u00e9p lai \u1edf ru\u1ed3i gi\u1ea5m: \u2640AaBb DE\/de x \u2642AabbDE\/de thu \u0111\u01b0\u1ee3c t\u1ec9 l\u1ec7 ki\u1ec3u h\u00ecnh tr\u1ed9i c\u1ea3 4 t\u00ednh tr\u1ea1ng \u1edf \u0111\u1eddi con l\u00e0 26,25%. T\u00ednh theo l\u00ed thuy\u1ebft, t\u1ec9 l\u1ec7 ki\u1ec3u h\u00ecnh mang 2 t\u00ednh tr\u1ea1ng tr\u1ed9i v\u00e0 2 t\u00ednh tr\u1ea1ng l\u1eb7n \u1edf \u0111\u1eddi con l\u00e0<\/span><\/p>\n

C\u00e2u 13.(ID:83508<\/strong>) Cho c\u00e1c th\u00f4ng tin sau \u0111\u00e2y:<\/p>\n

(1) mARN sau phi\u00ean m\u00e3 \u0111\u01b0\u1ee3c tr\u1ef1c ti\u1ebfp d\u00f9ng l\u00e0m khu\u00f4n \u0111\u1ec3 t\u1ed5ng h\u1ee3p protein<\/p>\n

(2)  khi riboxom ti\u1ebfp x\u00fac v\u1edbi m\u00e3 k\u1ebft th\u00fac tr\u00ean mARN th\u00ec qu\u00e1 tr\u00ecnh d\u1ecbch m\u00e3 ho\u00e0n t\u1ea5t.<\/p>\n

(3)  nh\u1edd m\u1ed9t enzim \u0111\u1eb7c hi\u1ec7u, acid amin m\u1edf \u0111\u1ea7u \u0111\u01b0\u1ee3c c\u1eaft kh\u1ecfi chu\u1ed7i polypeptit v\u1eeba t\u1ed5ng h\u1ee3p<\/p>\n

(4) mARN sau phi\u00ean m\u00e3 \u0111\u01b0\u1ee3c c\u1eaft b\u1ecf itron v\u00e0 n\u1ed1i c\u00e1c exon  l\u1ea1i v\u1edbi nhau th\u00e0nh mARN tr\u01b0\u1edfng th\u00e0nh<\/p>\n

C\u00e1c th\u00f4ng tin v\u1ec1 s\u1ef1 phi\u00ean m\u00e3 v\u00e0 d\u1ecbch m\u00e3 v\u1edbi c\u1ea3 t\u1ebf b\u00e0o nh\u00e2n th\u1ef1c v\u00e0 nh\u00e2n s\u01a1 l\u00e0:<\/p>\n

A. <\/strong>(2) v\u00e0 (4)        B.<\/strong> (2) v\u00e0 (3)   C.<\/strong> (3) v\u00e0 (4)    D.<\/strong> (1) v\u00e0 (4)<\/p>\n

C\u00e2u 14.(ID:83509<\/strong>) Ho\u00e1n v\u1ecb gen th\u01b0\u1eddng c\u00f3 t\u1ea7n s\u1ed1 nh\u1ecf h\u01a1n 50% v\u00ec<\/p>\n

A. <\/strong>Ho\u00e1n v\u1ecb gen x\u1ea3y ra c\u00f2n ph\u1ee5 thu\u1ed9c v\u00e0o gi\u1edbi, lo\u00e0i v\u00e0 \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng s\u1ed1ng.<\/p>\n

B.<\/strong>  Ch\u1ec9 c\u00f3 c\u00e1c gen \u1edf g\u1ea7n nhau ho\u1eb7c \u1edf xa t\u00e2m \u0111\u1ed9ng m\u1edbi x\u1ea3y ra ho\u00e1n v\u1ecb gen.<\/p>\n

C.<\/strong>  C\u00e1c gen tr\u00ean 1 nhi\u1ec5m s\u1eafc th\u1ec3 c\u00f3 xu h\u01b0\u1edbng ch\u1ee7 y\u1ebfu l\u00e0 li\u00ean k\u1ebft<\/p>\n

D. <\/strong>C\u00e1c gen trong t\u1ebf b\u00e0o ph\u1ea7n l\u1edbn di truy\u1ec1n \u0111\u1ed9c l\u1eadp ho\u1eb7c li\u00ean k\u1ebft gen ho\u00e0n to\u00e0n.<\/p>\n

C\u00e2u 15.(ID:83510<\/strong>) Cho bi\u1ebft m\u1ed7i gen qui \u0111\u1ecbnh m\u1ed9t t\u00ednh tr\u1ea1ng c\u00e1c gen ph\u00e2n li \u0111\u1ed9c l\u1eadp. Ph\u00e9p lai n\u00e0o sau \u0111\u00e2ycho t\u1ec9 l\u1ec7 ph\u00e2n li ki\u1ec3u gen \u1edf \u0111\u1eddi con l\u00e0 1:2:1:1:2:1?<\/p>\n

A.<\/strong> aaBb x AaBb    B.<\/strong> Aabb x Aabb     C.<\/strong> AaBb x AaBb    D.<\/strong> Aabb x aaBb<\/p>\n

c\u00e2u 16.(ID:83511<\/strong>) Gi\u1ea3 s\u1eed gen B \u1edf sinh v\u1eadt nh\u00e2n th\u1ef1c g\u1ed3m c\u00f3 2400 nucleotit v\u00e0 c\u00f3 s\u1ed1 nucleotit lo\u1ea1i A g\u1ea5p 3 l\u1ea7n s\u1ed1 nucleotit lo\u1ea1i G. M\u1ed9t \u0111\u1ed9t bi\u1ebfn \u0111i\u1ec3m x\u1ea3y ra l\u00e0m cho gen B b\u1ecb \u0111\u1ed9t bi\u1ebfn th\u00e0nh alen b.<\/strong> Alen b c\u00f3 chi\u1ec1u d\u00e0i kh\u00f4ng \u0111\u1ed5i nh\u01b0ng gi\u1ea3m \u0111i 1 li\u00ean k\u1ebft hidro so v\u1edbi gen B.<\/strong> S\u1ed1 l\u01b0\u1ee3ng t\u1eebng lo\u1ea1i nucleotit c\u1ee7a alen b l\u00e0:<\/p>\n

A.<\/strong> A = T = 301; G = X = 899<\/p>\n

B.<\/strong> A = T = 901; G = X = 299<\/p>\n

C. <\/strong>A = T = 299; G = X = 901<\/p>\n

D. <\/strong> A = T = 899; G = X = 301.<\/p>\n

C\u00e2u 17.(ID:83512<\/strong>) Th\u00e0nh ph\u1ea7n n\u00e0o sau \u0111\u00e2y kh\u00f4ng thu\u1ed9c th\u00e0nh c\u1ea5u tr\u00fac c\u1ee7a operon Lac \u1edf vi khu\u1ea9n E. Coli?<\/p>\n

A.<\/strong> V\u00f9ng v\u1eadn h\u00e0nh  (O) l\u00e0 n\u01a1i protein \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

B. <\/strong>C\u00e1c gen c\u00e2u tr\u00fac (Z, Y, A) qui \u0111\u1ecbnh t\u1ed5ng h\u1ee3p c\u00e1c enzim ph\u00e2n gi\u1ea3i \u0111\u01b0\u1eddng lactozo<\/p>\n

C. <\/strong>Gen \u0111i\u1ec1u h\u00f2a (R) qui \u0111\u1ecbnh t\u1ed5ng h\u1ee3p protein \u1ee9c ch\u1ebf<\/p>\n

D.<\/strong> V\u00f9ng kh\u1edfi \u0111\u1ed9ng (P) l\u00e0 n\u01a1i ARN polimeraza b\u00e1m v\u00e0o v\u00e0 kh\u1edfi \u0111\u1ea7u phi\u00ean m\u00e3<\/p>\n

C\u00e2u 18.(ID:83513<\/strong>) \u0110\u1eb7c \u0111i\u1ec3m m\u00e3 di truy\u1ec1n , n\u1ed9i dung n\u00e0o sau l\u00e0 sai?<\/p>\n

A.<\/strong> M\u00e3 \u0111i \u0111\u01b0\u1ee3c \u0111\u1ecdc t\u1eeb 1 \u0111i\u1ec3m x\u00e1c \u0111\u1ecbnh theo t\u1eebng b\u1ed9 ba nucleotit  m\u00e0 kh\u00f4ng g\u1ed1i l\u00ean nhau.<\/p>\n

B. <\/strong>M\u00e3 di truy\u1ec1n c\u00f3 t\u00ednh ph\u1ed5 bi\u1ebfn, t\u1ee9c l\u00e0 c\u00e1c lo\u1ea1i b\u1ed9 ba \u0111\u1ec1u m\u00e3 h\u00f3a axit amin.<\/p>\n

C. <\/strong>M\u00e3 di truy\u1ec1n mang t\u00ednh tho\u00e1i h\u00f3a, t\u1ee9c l\u00e0 nhi\u1ec1u b\u1ed9 ba kh\u00e1c nhau c\u00f9ng x\u00e1c \u0111\u1ecbnh m\u1ed9t lo\u1ea1i axit amin<\/p>\n

D. <\/strong>M\u00e3 di truy\u1ec1n c\u00f3 t\u00ednh \u0111\u1eb7c hi\u1ec7u, t\u1ee9c l\u00e0 m\u1ed9t b\u1ed9 ba ch\u1ec9 m\u00e3 h\u00f3a cho 1 lo\u1ea1i axit amin<\/p>\n

C\u00e2u 19.(ID:83524<\/strong>) \u1ede m\u1ed9t lo\u1ea1i th\u1ef1c v\u1eadt, alen A qui \u0111\u1ecbnh qu\u1ea3 tr\u00f2n l\u00e0 tr\u1ed9i ho\u00e0n to\u00e0n so v\u1edbi alen a qui \u0111\u1ecbnh qu\u1ea3 d\u00e0i, B qui \u0111\u1ecbnh qu\u1ea3 ng\u1ecdt l\u00e0 tr\u1ed9i ho\u00e0n to\u00e0n so v\u1edbi alen b qui \u0111\u1ecbnh qu\u1ea3 chua, D qui \u0111\u1ecbnh qu\u1ea3 ch\u00edn s\u1edbm l\u00e0 tr\u1ed9i ho\u00e0n to\u00e0n so v\u1edbi alen d qu\u1ea3 ch\u00edn mu\u1ed9n. Th\u1ebf h\u1ec7 xu\u1ea5t ph\u00e1t cho c\u00e2y qu\u1ea3 tr\u00f2n, ng\u1ecdt, ch\u00edn s\u1edbm t\u1ef1 th\u1ee5 \u0111\u01b0\u1ee3c F1 g\u1ed3m 774 c\u00e2y qu\u1ea3 tr\u00f2n, ng\u1ecdt, ch\u00edn s\u1edbm: 259 c\u00e2y qu\u1ea3 tr\u00f2n, chua, ch\u00edn mu\u1ed9n: 258 c\u00e2y qu\u1ea3 d\u00e0i, ng\u1ecdt, ch\u00edn s\u1edbm: 86 c\u00e2y qu\u1ea3 d\u00e0i, chua, ch\u00edn mu\u1ed9n. Bi\u1ebft r\u1eb1ng kh\u00f4ng c\u00f3 \u0111\u1ed9t bi\u1ebfn x\u1ea3y ra, ki\u1ec3u gen n\u00e0o sau \u0111\u00e2y ph\u00f9 h\u1ee3p v\u1edbi c\u00e2y \u1edf P?<\/p>\n

A. <\/strong>Aa BD\/bd           B.<\/strong> Bb AD\/ad       C.<\/strong> Aa Bd\/bD    C.<\/strong> Bb Ad\/aD<\/p>\n

C\u00e2u 20.(ID:83515<\/strong>) Ph\u00e1t bi\u1ec3u n\u00e0o sau \u0111\u00e2y ch\u01b0a ch\u00ednh x\u00e1c?<\/p>\n

A.<\/strong> 1 riboxom c\u00f3 th\u1ec3 tham gia t\u1ed5ng h\u1ee3p b\u1ea5t c\u1ee9 lo\u1ea1i protein n\u00e0o<\/p>\n

B. <\/strong>Enzim phi\u00ean m\u00e3 t\u00e1c d\u1ee5ng theo chi\u1ec1u 3\u2019 -> 5\u2019 tr\u00ean m\u1ea1ch m\u00e3 g\u1ed1c<\/p>\n

C.<\/strong>  Riboxom d\u1ecbch chuy\u1ec3n tr\u00ean mARN theo t\u1eebng b\u1ed9 ba theo chi\u1ec1u t\u1eeb 5\u2019 -> 3\u2019<\/p>\n

D.<\/strong>  Enzim phi\u00ean m\u00e3 t\u00e1c d\u1ee5ng t\u1eeb \u0111\u1ea7u \u0111\u1ebfn cu\u1ed1i ph\u00e2n t\u1eed AND theo chi\u1ec1u 3\u2019 -> 5\u2019<\/p>\n

C\u00e2u 21.(ID:83516<\/strong>) Cho bi\u1ebft m\u1ed7i gen qui \u0111\u1ecbnh m\u1ed9t t\u00ednh tr\u1ea1ng, c\u00e1c gen tr\u1ed9i l\u1eb7n ho\u00e0n to\u00e0n, kh\u00f4ng x\u1ea3y ra \u0111\u1ed9t bi\u1ebfn. Cho ph\u00e9p lai P \u2642 AB\/\/ab CcDDXBXb x \u2640Ab\/\/aB CcDdXbY, \u0111\u1eddi con c\u00f3 th\u1ec3 c\u00f3 t\u1ed1i \u0111a s\u1ed1 lo\u1ea1i ki\u1ec3u gen v\u00e0 s\u1ed1 lo\u1ea1i ki\u1ec3u h\u00ecnh l\u1ea7n l\u01b0\u1ee3t l\u00e0<\/p>\n

A. <\/strong>48 v\u00e0 24          B.<\/strong>240  v\u00e0 32    C<\/strong> 360 v\u00e0 64     D.<\/strong> 48 v\u00e0 24<\/p>\n

C\u00e2u 22.(ID:83517<\/strong>) Th\u00e0nh t\u1ef1u n\u00e0o sau \u0111\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 do c\u00f4ng ngh\u1ec7 gen?<\/p>\n

A. <\/strong>T\u1ea1o vi khu\u1ea9n E. coli s\u1ea3n xu\u1ea5t ch\u1eefa b\u1ec7nh \u0111\u00e1i th\u00e1o \u0111\u01b0\u1eddng \u1edf ng\u01b0\u1eddi<\/p>\n

B. <\/strong>T\u1ea1o gi\u1ed1ng c\u00e0 chua c\u00f3 gen b\u1ecb b\u1ea5t ho\u1ea1t l\u00e0m qu\u1ea3 ch\u1eadm ch\u00edn<\/p>\n

C.<\/strong> T\u1ea1o ra c\u00e2y b\u00f4ng mang gen kh\u00e1ng \u0111\u01b0\u1ee3c thu\u1ed1c tr\u1eeb s\u00e2u<\/p>\n

D.<\/strong> T\u1ea1o ra c\u1eebu \u0110\u00f4ly<\/p>\n

C\u00e2u 23.(ID:83518<\/strong>) \u1edf m\u1ed9t lo\u00e0i th\u1ef1c v\u1eadt, gen A qui \u0111\u1ecbnh th\u00e2n cao tr\u1ed9i ho\u00e0n to\u00e0n so v\u1edbi gen a qui \u0111\u1ecbnh th\u00e2n th\u1ea5p, gen B quy \u0111\u1ecbnh hoa \u0111\u1ecf tr\u1ed9i ho\u00e0n to\u00e0n so v\u1edbi gen b quy \u0111\u1ecbnh hoa tr\u1eafng. Lai c\u00e2y th\u00e2n cao, hoa \u0111\u1ecf v\u1edbi c\u00e2y th\u00e2n th\u1ea5p, hoa tr\u1eafng thu \u0111\u01b0\u1ee3c F1 ph\u00e2n li theo t\u1ec9 l\u1ec7 37,5% c\u00e2y th\u00e2n cao, hoa tr\u1eafng : 37,5% c\u00e2y th\u00e2n th\u1ea5p, hoa \u0111\u1ecf : 12,5% c\u00e2y th\u00e2n cao, hoa \u0111\u1ecf : 12,5% c\u00e2y th\u00e2n th\u1ea5p, hoa tr\u1eafng. Cho bi\u1ebft kh\u00f4ng c\u00f3 \u0111\u1ed9t bi\u1ebfn x\u1ea3y ra.<\/strong> Ki\u1ec3u gen c\u1ee7a c\u00e2y b\u1ed1, m\u1eb9 trong ph\u00e9p lai tr\u00ean l\u00e0:<\/p>\n

A.<\/strong> AaBB x aabb    B.<\/strong> AaBb x aabb    C.<\/strong> AB\/ab x ab\/ab    D.<\/strong> Ab\/aB x ab\/ab<\/p>\n

C\u00e2u 24.(ID:83519<\/strong>) B\u1ea3n ch\u1ea5t quy lu\u1eadt ph\u00e2n li c\u1ee7a Men\u0111en l\u00e0:<\/p>\n

A. <\/strong>S\u1ef1 ph\u00e2n li \u0111\u1ed3ng \u0111\u1ec1u c\u1ee7a c\u00e1c alen v\u1ec1 c\u00e1c giao t\u1eed trong gi\u1ea3m ph\u00e2n<\/p>\n

B. <\/strong>S\u1ef1 ph\u00e2n li ki\u1ec3u h\u00ecnh \u1edf F2 theo t\u1ec9 l\u1ec7 1:2:1<\/p>\n

C. <\/strong>S\u1ef1 ph\u00e2n li ki\u1ec3u h\u00ecnh \u1edf F2 theo t\u1ec9 l\u1ec7 9:3:1:1 v\u00e0 ph\u00e2n li ki\u1ec3u gen 1:2:1<\/p>\n

D.<\/strong>  S\u1ef1 ph\u00e2n li ki\u1ec3u h\u00ecnh \u1edf F2 theo t\u1ec9 l\u1ec7 3:1<\/p>\n

C\u00e2u 25.(ID:83520<\/strong>) \u1edf c\u00e0 \u0111\u1ed9c d\u01b0\u1ee3c (2n = 24), ng\u01b0\u1eddi ta \u0111\u00e3 ph\u00e1t hi\u1ec7n \u0111\u01b0\u1ee3c c\u00e1c d\u1ea1ng th\u1ec3 ba \u1edf c\u00e0 12 c\u1eb7p nhi\u1ec5m s\u1eafp th\u1ec3. C\u00e1c th\u1ec3 ba n\u00e0y:<\/p>\n

A.<\/strong> C\u00f3 s\u1ed1 l\u01b0\u1ee3ng nhi\u1ec5m s\u1eafc th\u1ec3 trong t\u1ebf b\u00e0o x\u00f4ma gi\u1ed1ng nhau v\u00e0 c\u00f3 ki\u1ec3u h\u00ecnh gi\u1ed1ng nhau.<\/p>\n

B. <\/strong>C\u00f3 s\u1ed1 l\u01b0\u1ee3ng nhi\u1ec5m s\u1eafc th\u1ec3 trong t\u1ebf b\u00e0o x\u00f4ma gi\u1ed1ng nhau v\u00e0 c\u00f3 ki\u1ec3u h\u00ecnh kh\u00e1c nhau.<\/p>\n

C. <\/strong>C\u00f3 s\u1ed1 l\u01b0\u1ee3ng nhi\u1ec5m s\u1eafc th\u1ec3 trong t\u1ebf b\u00e0o x\u00f4ma kh\u00e1c nhau v\u00e0 c\u00f3 ki\u1ec3u h\u00ecnh gi\u1ed1ng nhau.<\/p>\n

D. <\/strong>C\u00f3 s\u1ed1 l\u01b0\u1ee3ng nhi\u1ec5m s\u1eafc th\u1ec3 trong t\u1ebf b\u00e0o x\u00f4ma kh\u00e1c nhau v\u00e0 c\u00f3 ki\u1ec3u h\u00ecnh kh\u00e1c nhau.<\/p>\n

C\u00e2u 26.(ID:83521<\/strong>) \u0110\u1ec3 t\u1ea1o ra c\u00e1c gi\u1ed1ng thu\u1ea7n ch\u1ee7ng mang c\u00e1c \u0111\u1eb7c t\u00ednh mong mu\u1ed1n (t\u00ednh kh\u00e1ng thu\u1ed1c di\u1ec7t c\u1ecf, kh\u00e1ng s\u00e2u b\u1ec7nh, t\u00ednh ch\u1ecbu l\u1ea1nh, t\u00ednh ch\u1ecbu h\u1ea1n ), ng\u01b0\u1eddi ta th\u01b0\u1edfng s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p<\/p>\n

A.<\/strong>  Dung h\u1ee3p t\u1ebf b\u00e0o tr\u1ea7n<\/p>\n

B.<\/strong>  Nu\u00f4i t\u1ebf b\u00e0o t\u1ea1o m\u00f4 s\u1eb9o<\/p>\n

C.<\/strong>  T\u1ea1o gi\u1ed1ng b\u1eb1ng ch\u1ecdn l\u1ecdc d\u00f2ng t\u1ebf b\u00e0o xoma c\u00f3 bi\u1ebfn d\u1ecb<\/p>\n

D.<\/strong>  Nu\u00f4i h\u1ea1t ph\u1ea5n ho\u1eb7c no\u00e3n ch\u01b0a th\u1ee5 tinh<\/p>\n

C\u00e2u 27.(ID:83522<\/strong>) Ph\u00e2n t\u1eed tARN mang axit min fomin methionine  \u1edf sinh v\u1eadt nh\u00e2n s\u01a1 c\u00f3 b\u1ed9 3 \u0111\u1ed1i m\u00e3 (anticodon) l\u00e0<\/p>\n

A. <\/strong>3\u2019UAX5\u2019        B.<\/strong> 3\u2019AUG5\u2019        C<\/strong> 5\u2019AUG3\u2019           D.<\/strong> 5\u2019UAX3\u2019<\/p>\n

C\u00e2u 28.(ID:83523) T\u00ednh tr\u1ea1ng th\u00e2n x\u00e1m (A) c\u00e1nh d\u00e0i (B) \u1edf ru\u1ed3i gi\u1ea5m l\u00e0 tr\u1ed9i ho\u00e0n to\u00e0n so v\u1edbi th\u00e2n \u0111en (a), c\u00e1nh c\u1ee5t (b), 2 gen quy \u0111\u1ecbnh t\u00ednh tr\u1ea1ng tr\u00ean c\u00f9ng n\u1eb1m tr\u00ean 1 c\u1eb7p NST th\u01b0\u1eddng. Gen D quy \u0111\u1ecbnh m\u1eaft m\u00e0 \u0111\u1ecf l\u00e0 tr\u1ed9i ho\u00e0n to\u00e0n so v\u1edbi alen d quy \u0111\u1ecbnh m\u1eaft tr\u1eafng n\u1eb1m tr\u00ean v\u00f9ng kh\u00f4ng t\u01b0\u01a1ng \u0111\u1ed3ng c\u1ee7a NST gi\u1edbi t\u00ednh X. Th\u1ebf h\u1ec7 P cho giao ph\u1ed1i ru\u1ed3i c\u00e1i Ab\/aB XDXd v\u1edbi ru\u1ed3i \u0111\u1ef1c AB\/ab XdY \u0111\u01b0\u1ee3c F1 160 c\u00e1 th\u1ec3 trong s\u1ed1 \u0111\u00f3 c\u00f3 6 ru\u1ed3i c\u00e1i \u0111en, d\u00e0i tr\u1eafng. Cho r\u1eb1ng t\u1ea5t c\u00e1c tr\u1ee9ng t\u1ea1o ra \u0111\u1ec1u tham gia v\u00e0o qu\u00e1 tr\u00ecnh th\u1ee5 tinh v\u00e0 hi\u1ec7u su\u1ea5t th\u1ee5 tinh c\u1ee7a tr\u1ee9ng l\u00e0 80%, 100% tr\u1ee9ng th\u1ee5 tinh \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n th\u00e0nh c\u00e1 th\u1ec3. C\u00d3 bao nhi\u00eau t\u1ebf bao sinh tr\u1ee9ng c\u1ee7a ru\u1ed3i gi\u1ea5m n\u00f3i tr\u00ean kh\u00f4ng x\u1ea3y ra ho\u00e1n v\u1ecb gen trong qu\u00e1 tr\u00ecnh t\u1ea1o giao t\u1eed<\/p>\n

A. <\/strong>32 t\u1ebf b\u00e0o        B.<\/strong> 40 t\u1ebf b\u00e0o          C.<\/strong> 120 t\u1ebf b\u00e0o           D.<\/strong> 96 t\u1ebf b\u00e0o<\/p>\n

C\u00e2u 29.(ID:83524<\/strong>) Nhi\u1ec1u lo\u1ea1i b\u1ec7nh ung th\u01b0 xu\u1ea5t hi\u1ec7n l\u00e0 do gen ti\u1ec1n ung th\u01b0 b\u1ecb \u0111\u1ed9t bi\u1ebfn chuy\u1ec3n th\u00e0nh gen ung th\u01b0. Khi b\u1ecb \u0111\u1ed9t bi\u1ebfn, gen n\u00e0y ho\u1ea1t \u0111\u1ed9ng m\u1ea1nh h\u01a1n v\u00e0 t\u1ea1o ra qu\u00e1 nhi\u1ec1u s\u1ea3n ph\u1ea9m l\u00e0m t\u0103ng t\u1ed1c \u0111\u1ed9 ph\u00e2n b\u00e0o d\u1eabn \u0111\u1ebfn kh\u1ed1i u t\u0103ng sinh qu\u00e1 m\u1ee9c m\u00e0 c\u01a1 th\u1ec3 kh\u00f4ng ki\u1ec3m so\u00e1t \u0111\u01b0\u1ee3c.<\/strong> nh\u1eefng gen ung th\u01b0 lo\u1ea1i n\u00e0y th\u01b0\u1eddng l\u00e0<\/p>\n

A.<\/strong> Gen tr\u1ed9i v\u00e0 di truy\u1ec1n \u0111\u01b0\u1ee3c v\u00ec ch\u00fang xu\u1ea5t hi\u1ec7n \u1edf t\u1ebf b\u00e0o sinh d\u1ee5c<\/p>\n

B.<\/strong> Gen l\u1eb7n v\u00e0 di truy\u1ec1n \u0111\u01b0\u1ee3c ch\u00fang xu\u1ea5t hi\u1ec7n \u1edf t\u1ebf b\u00e0o sinh d\u1ee5c<\/p>\n

C. <\/strong>Gen l\u1eb7n v\u00e0 kh\u00f4ng di truy\u1ec1n \u0111\u01b0\u1ee3c v\u00ec ch\u00fang xu\u1ea5t hi\u1ec7n \u1edf t\u1ebf b\u00e0o sinh d\u01b0\u1ee1ng<\/p>\n

D. <\/strong>Gen tr\u1ed9i v\u00e0 kh\u00f4ng di truy\u1ec1n \u0111\u01b0\u1ee3c v\u00ec ch\u00fang xu\u1ea5t hi\u1ec7n \u1edf t\u1ebf b\u00e0o sinh d\u01b0\u1ee1ng.<\/p>\n

C\u00e2u 30.(ID:83525<\/strong>) L\u00faa m\u00ec l\u1ee5c b\u1ed9i 6n gi\u1ea3m ph\u00e2n b\u00ecnh th\u01b0\u1eddng t\u1ea1o giao t\u1eed 3n. Gi\u1ea3 s\u1eed c\u00e1c giao t\u1eed t\u1ea1o ra \u0111\u1ec1u c\u00f3 kh\u1ea3 n\u0103ng th\u1ee5 tinh nh\u01b0 nhau. Cho c\u00e1c c\u00e2y l\u00faa m\u00ec l\u1ee5c b\u1ed9i c\u00f3 ki\u1ec3u gen AAAaaa t\u1ef1 th\u1ee5 ph\u1ea5n th\u00ec \u1edf F1 t\u1ec9 l\u1ec7 c\u00e1c c\u00e1 th\u1ec3 c\u00f3 ki\u1ec3u gen gi\u1ed1ng b\u1ed1 m\u1eb9 chi\u1ebfm t\u1ec9 l\u1ec7<\/p>\n

A.<\/strong> 24,75%             B.<\/strong> 45%    C.<\/strong> 49,5%    D.<\/strong> 41%<\/p>\n

C\u00e2u 31.(ID:83526<\/strong>) S\u01a1 \u0111\u1ed3 ph\u1ea3 h\u1ec7 d\u01b0\u1edbi \u0111\u00e2y m\u00f4 t\u1ea3 s\u1ef1 di truy\u1ec3n c\u1ee7a m\u1ed9t b\u1ec7nh \u1edf ng\u01b0\u1eddi do m\u1ed9t trong hai alen c\u1ee7a m\u1ed9t gen quy \u0111\u1ecbnh.<\/p>\n

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\u0110\u00e1p \u00e1n \u0111\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n sinh n\u0103m 2016- \u0111\u1ec1 s\u1ed1 12<\/strong><\/p>\n

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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 12 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:83496) Trong ch\u1ecdn gi\u1ed1ng ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 lo\u1ea1i kh\u1ecfi nhi\u1ec5m s\u1eafc th\u1ec3 […]<\/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