M\u1eabu 1: \u0111\u1ec1 thi th\u1eed thpt m\u00f4n Sinh 2017 chu\u00e2n b\u1ecb cho k\u00ec thi thpt qu\u1ed1c gia<\/strong><\/p>\n

C\u00e2u 1. \u1ede ru\u1ed3i gi\u1ea5m, gen A quy \u0111\u1ecbnh t\u00ednh tr\u1ea1ng m\u1eaft \u0111\u1ecf, gen a \u0111\u1ed9t bi\u1ebfn quy \u0111\u1ecbnh t\u00ednh tr\u1ea1ng m\u1eaft tr\u1eafng. Khi 2 gen n\u00f3i tr\u00ean t\u1ef1 t\u00e1i b\u1ea3n 4 l\u1ea7n th\u00ec s\u1ed1 nucl\u00ea\u00f4tit trong c\u00e1c gen m\u1eaft \u0111\u1ecf \u00edt h\u01a1n c\u00e1c gen m\u1eaft tr\u1eafng 32 nucl\u00ea\u00f4tit t\u1ef1 do v\u00e0 gen m\u1eaft tr\u1eafng t\u0103ng l\u00ean 3 li\u00ean k\u1ebft hidro. Ki\u1ec3u bi\u1ebfn \u0111\u1ed5i c\u00f3 th\u1ec3 x\u1ea3y ra trong gen \u0111\u1ed9t bi\u1ebfn l\u00e0:
\nA. Thay th\u1ebf 1 c\u1eb7p G \u2013 X\u00a0 b\u1eb1ng 1 c\u1eb7p A \u2013 T.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 B. Th\u00eam 1 c\u1eb7p G \u2013 X.
\nC. Thay th\u1ebf 3 c\u1eb7p A \u2013 T b\u1eb1ng 3 c\u1eb7p G \u2013 X.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 D. M\u1ea5t 1 c\u1eb7p G \u2013 X.
\nC\u00e2u 2. \u1ede ru\u1ed3i gi\u1ea5m, khi lai 2 c\u01a1 th\u1ec3 d\u1ecb h\u1ee3p v\u1ec1 th\u00e2n x\u00e1m, c\u00e1nh d\u00e0i, thu \u0111\u01b0\u1ee3c ki\u1ec3u h\u00ecnh l\u1eb7n th\u00e2n \u0111en, c\u00e1nh c\u1ee5t \u1edf \u0111\u1eddi lai chi\u1ebfm t\u1ec9 l\u1ec7 9%, (bi\u1ebft r\u1eb1ng m\u1ed7i gen quy \u0111\u1ecbnh m\u1ed9t t\u00ednh tr\u1ea1ng). T\u1ea7n s\u1ed1 ho\u00e1n v\u1ecb gen l\u00e0:
\nA. 40%.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 B. 36% ho\u1eb7c 40%.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 C. 18%.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 D. 36%.
\nC\u00e2u 3. Nghi\u00ean c\u1ee9u 1 qu\u1ea7n th\u1ec3 chim c\u00e1nh c\u1ee5t g\u1ed3m\u00a0 2000 c\u00e1 th\u1ec3\u00a0 ng\u01b0\u1eddi ta nh\u1eadn th\u1ea5y t\u1ec9 l\u1ec7 sinh s\u1ea3n, t\u1eed vong h\u00e0ng n\u0103m kho\u1ea3ng 4,5% v\u00e0 1,25% so v\u1edbi t\u1ed5ng s\u1ed1 c\u00e1 th\u1ec3 c\u1ee7a qu\u1ea7n th\u1ec3. K\u00edch th\u01b0\u1edbc c\u1ee7a qu\u1ea7n th\u1ec3 l\u00e0 bao nhi\u00eau sau th\u1eddi gian 2 n\u0103m:
\nA. 2130\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 B. 2067\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 C. 2097\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 D. 2132<\/p>\n

C\u00e2u 9. Theo quan \u0111i\u1ec3m ti\u1ebfn ho\u00e1 hi\u1ec7n \u0111\u1ea1i, khi n\u00f3i v\u1ec1 ch\u1ecdn l\u1ecdc t\u1ef1 nhi\u00ean, ph\u00e1t bi\u1ec3u n\u00e0o sau \u0111\u00e2y kh\u00f4ng\u00a0 \u0111\u00fang?
\nA. Ch\u1ecdn l\u1ecdc t\u1ef1 nhi\u00ean ch\u1ed1ng l\u1ea1i alen tr\u1ed9i c\u00f3 th\u1ec3 nhanh ch\u00f3ng l\u00e0m thay \u0111\u1ed5i t\u1ea7n s\u1ed1 alen c\u1ee7a qu\u1ea7n th\u1ec3.
\nB. Ch\u1ecdn l\u1ecdc t\u1ef1 nhi\u00ean l\u00e0m xu\u1ea5t hi\u1ec7n c\u00e1c alen m\u1edbi v\u00e0 c\u00e1c ki\u1ec3u gen m\u1edbi trong qu\u1ea7n th\u1ec3.
\nC. Ch\u1ecdn l\u1ecdc t\u1ef1 nhi\u00ean t\u00e1c \u0111\u1ed9ng tr\u1ef1c ti\u1ebfp l\u00ean ki\u1ec3u h\u00ecnh v\u00e0 gi\u00e1n ti\u1ebfp l\u00e0m bi\u1ebfn \u0111\u1ed5i t\u1ea7n s\u1ed1 ki\u1ec3u gen.
\nD. Ch\u1ecdn l\u1ecdc t\u1ef1 nhi\u00ean kh\u00f4ng th\u1ec3 lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n m\u1ed9t alen l\u1eb7n c\u00f3 h\u1ea1i ra kh\u1ecfi qu\u1ea7n th\u1ec3.
\nC\u00e2u 10. Qu\u00e1 tr\u00ecnh h\u00ecnh th\u00e0nh m\u1ed9t qu\u1ea7n x\u00e3 \u1ed5n \u0111\u1ecbnh t\u1eeb m\u1ed9t h\u00f2n \u0111\u1ea3o m\u1edbi \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh gi\u1eefa bi\u1ec3n, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0
\nA. Di\u1ec5n th\u1ebf d\u01b0\u1edbi n\u01b0\u1edbc\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 B. Di\u1ec5n th\u1ebf th\u1ee9 sinh\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 C. Di\u1ec5n th\u1ebf nguy\u00ean sinh\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 D. Di\u1ec5n th\u1ebf tr\u00ean c\u1ea1n
\nC\u00e2u 11. M\u1ed9t \u0111o\u1ea1n ph\u00e2n t\u1eed ADN c\u00f3 s\u1ed1 l\u01b0\u1ee3ng nucleotit lo\u1ea1i A=20% v\u00e0 c\u00f3 X=621nucleotit. \u0110o\u1ea1n ADN n\u00e0y c\u00f3 chi\u1ec1u d\u00e0i t\u00ednh ra \u0111\u01a1n v\u1ecb \u03bcm l\u00e0:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 A. 3519\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 B. 0,7038\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 C. 0,0017595\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0 D. 0,3519
\nC\u00e2u 12. \u0110\u01a1n vi\u0323 b\u1ecb bi\u1ebfn \u0111\u1ed5i trong gen \u0111\u00f4\u0323t bi\u1ebfn la\u0300:
\nA. 1 ho\u0103\u0323c m\u00f4\u0323t s\u1ed1 axit amin.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 B. 1 ho\u1eb7c 1 s\u00f4\u0301 nu.\u00a0\u00a0\u00a0 C. M\u00f4\u0323t c\u0103\u0323p nucl\u00ea\u00f4tit\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0 D. 1 ho\u0103\u0323c m\u00f4\u0323t s\u1ed1 nucl\u00ea\u00f4x\u00f4m.<\/p>\n

C\u00f2n n\u1eefa, h\u00e3y tai v\u1ec1 xem nh\u00e9!<\/em><\/p>\n

M\u1eabu 2: \u0111\u1ec1 thi th\u1eed m\u00f4n Sinh 2017 c\u00f3 l\u1eddi gi\u1ea3i \u0111\u00e1p \u00e1n
\n<\/strong><\/p>\n

C\u00e2u 1: \u0110\u1ec3 chuy\u1ec3n m\u1ed9t gen c\u1ee7a ng\u01b0\u1eddi v\u00e0o t\u1ebf b\u00e0o vi khu\u1ea9n E-coli nh\u1eb1m t\u1ea1o ra nhi\u1ec1u s\u1ea3n ph\u1ea9m c\u1ee7a gen ng\u01b0\u1eddi trong t\u1ebf b\u00e0o vi khu\u1ea9n ng\u01b0\u1eddi ta ph\u1ea3i l\u1ea5y mARN c\u1ee7a gen ng\u01b0\u1eddi c\u1ea7n chuy\u1ec3n, cho phi\u00ean m\u00e3 ng\u01b0\u1ee3c th\u00e0nh ADN r\u1ed3i m\u1edbi g\u1eafn ADN n\u00e0y v\u00e0o plasmit v\u00e0 chuy\u1ec3n v\u00e0o vi khu\u1ea9n. V\u00ec n\u1ebfu kh\u00f4ng l\u00e0m nh\u01b0 v\u1eady th\u00ec<\/p>\n

\n
1. gen c\u1ee7a ng\u01b0\u1eddi c\u00f3 k\u00edch th\u01b0\u1edbc l\u1edbn kh\u00f4ng \u0111\u01b0a v\u00e0o \u0111\u01b0\u1ee3c t\u1ebf b\u00e0o vi khu\u1ea9n.<\/li>\n
2. gen c\u1ee7a ng\u01b0\u1eddi s\u1ebd kh\u00f4ng th\u1ec3 d\u1ecbch m\u00e3 \u0111\u01b0\u1ee3c trong t\u1ebf b\u00e0o vi khu\u1ea9n.<\/li>\n
3. s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c t\u1ed5ng h\u1ee3p t\u1eeb c\u1ee7a gen c\u1ee7a ng\u01b0\u1eddi s\u1ebd kh\u00f4ng b\u00ecnh th\u01b0\u1eddng v\u00e0 kh\u00f4ng c\u00f3 gi\u00e1 tr\u1ecb s\u1eed d\u1ee5ng.<\/li>\n
4. gen c\u1ee7a ng\u01b0\u1eddi s\u1ebd kh\u00f4ng th\u1ec3 phi\u00ean m\u00e3 \u0111\u01b0\u1ee3c trong t\u1ebf b\u00e0o vi khu\u1ea9n<\/li>\n<\/ol>\n

   C\u00e2u 2: D\u1ea1ng \u0111\u1ed9t bi\u1ebfn ph\u00e1t sinh trong l\u1ea7n nguy\u00ean ph\u00e2n \u0111\u1ea7u ti\u00ean c\u1ee7a h\u1ee3p t\u1eed, l\u00e0m cho t\u1ea5t c\u1ea3 NST kh\u00f4ng ph\u00e2n li s\u1ebd t\u1ea1o ra:<\/p>\n

   \n
   1. Th\u1ec3 d\u1ecb \u0111a b\u1ed9i. \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0B. Th\u1ec3 nhi\u1ec1u nhi\u1ec5m.<\/li>\n
   2. Th\u1ec3 l\u1ec7ch b\u1ed9i. \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0D. Th\u1ec3 t\u1ef1 t\u1ee9 b\u1ed9i.<\/li>\n<\/ol>\n

      C\u00e2u 3: M\u1ed9t qu\u1ea7n th\u1ec3 th\u1ef1c v\u1eadt, gen A c\u00f3 3 alen, gen B c\u00f3 4 alen ph\u00e2n li \u0111\u1ed9c l\u1eadp th\u00ec qu\u00e1 tr\u00ecnh ng\u1eabu ph\u1ed1i s\u1ebd t\u1ea1o ra trong qu\u1ea7n th\u1ec3 s\u1ed1 lo\u1ea1i ki\u1ec3u gen l\u00e0:<\/p>\n

      \n
      1. 80. \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0B. 60. \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 C. 20. \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 D. 40<\/li>\n<\/ol>\n

         C\u00e2u 4: M\u1ed7i gen trong c\u1eb7p gen d\u1ecb h\u1ee3p \u0111\u1ec1u ch\u1ee9a 2998 li\u00ean k\u1ebft ph\u1ed1t pho\u0111ieste n\u1ed1i gi\u1eefa c\u00e1c nucl\u00ea\u00f4t\u00edt. Gen tr\u1ed9i D ch\u1ee9a 17,5% s\u1ed1 nucl\u00eaott\u00edt lo\u1ea1i T. Gen l\u1eb7n d c\u00f3 A = G = 25%. T\u1ebf b\u00e0o mang ki\u1ec3u gen Ddd gi\u1ea3m ph\u00e2n b\u00ecnh th\u01b0\u1eddng th\u00ec lo\u1ea1i giao t\u1eed n\u00e0o sau \u0111\u00e2y kh\u00f4ng th\u1ec3 t\u1ea1o ra?<\/p>\n

         \n
         1. Giao t\u1eed c\u00f3 1275 Timin \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0B. Giao t\u1eed c\u00f3 1275 Xit\u00f4zin<\/li>\n
         2. Giao t\u1eed c\u00f3 1050 A\u0111\u00eamin \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0D. Giao t\u1eed c\u00f3 1500 Guanin<\/li>\n<\/ol>\n

            C\u00e2u 5: C\u00e1c b\u1ec7nh di truy\u1ec1n \u1edf ng\u01b0\u1eddi ph\u00e1t sinh do c\u00f9ng m\u1ed9t d\u1ea1ng \u0111\u1ed9t bi\u1ebfn l\u00e0<\/p>\n

            \n
            1. m\u00f9 m\u00e0u v\u00e0 m\u00e1u kh\u00f3 \u0111\u00f4ng. \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0B. b\u1ec7nh \u0110ao v\u00e0 h\u1ed3ng c\u1ea7u l\u01b0\u1ee1i li\u1ec1m.<\/li>\n
            2. b\u1ea1ch t\u1ea1ng v\u00e0 ung th\u01b0 m\u00e1u. \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 D. ung th\u01b0 m\u00e1u v\u00e0 m\u00e1u kh\u00f3 \u0111\u00f4ng<\/li>\n<\/ol>\n

               C\u00e2u 6: Cho bi\u1ebft m\u1ed7i t\u00ednh tr\u1ea1ng do m\u1ed9t c\u1eb7p gen quy \u0111\u1ecbnh v\u00e0 ph\u00e2n ly \u0111\u1ed9c l\u1eadp v\u1edbi nhau. \u1ede \u0111\u1eddi con c\u1ee7a ph\u00e9p lai: \u00a0AaBbCcDd x AaBbCcDd, ki\u1ec3u h\u00ecnh mang t\u00ednh tr\u1ea1ng tr\u1ed9i l\u00e0<\/p>\n

               \n
               1. 81\/256. \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 B. 255\/256. \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 C.27\/256. \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 D. 9\/256.<\/li>\n<\/ol>\n

                  C\u00e2u 7: Gen ph\u00e2n m\u1ea3nh l\u00e0 gen:<\/p>\n

                  \n
                  1. ch\u1ec9 c\u00f3 ex\u00f4n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0B. c\u00f3 v\u00f9ng m\u00e3 ho\u00e1 li\u00ean t\u1ee5c.<\/li>\n
                  2. c\u00f3 v\u00f9ng m\u00e3 ho\u00e1 kh\u00f4ng li\u00ean t\u1ee5c. \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 D. ch\u1ec9 c\u00f3 \u0111o\u1ea1n intr\u00f4n.<\/li>\n<\/ol>\n

                     C\u00e2u 8: T\u1ebf b\u00e0o c\u1ee7a m\u1ed9t thai nhi ch\u1ee9a 45 nhi\u1ec5m s\u1eafc th\u1ec3 trong \u0111\u00f3 c\u00f3 1 NST X. C\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n r\u1eb1ng:<\/p>\n

                     \n
                     1. Thai nhi s\u1ebd ph\u00e1t tri\u1ec3n th\u00e0nh b\u00e9 trai b\u00ecnh th\u01b0\u1eddng.<\/li>\n
                     2. Thai nhi s\u1ebd ph\u00e1t tri\u1ec3n th\u00e0nh b\u00e9 g\u00e1i kh\u00f4ng b\u00ecnh th\u01b0\u1eddng.<\/li>\n
                     3. Thai nhi s\u1ebd ph\u00e1t tri\u1ec3n th\u00e0nh th\u00e0nh b\u00e9 trai kh\u00f4ng b\u00ecnh th\u01b0\u1eddng .<\/li>\n
                     4. Thai nhi ph\u00e1t tri\u1ec3n th\u00e0nh ng\u01b0\u1eddi b\u1ecb h\u1ed9i ch\u1ee9ng \u0110ao.<\/li>\n<\/ol>\n

                        C\u00e2u 9. \u0110\u1ed9t bi\u1ebfn \u0111\u1ea3o \u0111o\u1ea1n NST c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 h\u1ecfng m\u1ed9t gen n\u00e0o \u0111\u00f3 trong tr\u01b0\u1eddng h\u1ee3p<\/p>\n

                        \n
                        1. v\u1ecb tr\u00ed \u0111\u1ee9t \u1edf v\u00f9ng li\u1ec1n k\u1ec1 m\u1ed9t gen n\u00e0o \u0111\u00f3.<\/li>\n
                        2. v\u1ecb tr\u00ed \u0111\u1ee9t \u1edf gi\u1eefa gen.<\/li>\n
                        3. v\u1ecb tr\u00ed \u0111\u1ee9t kh\u00f4ng thu\u1ed9c v\u00f9ng m\u00e3 h\u00f3a m\u1ed9t gen n\u00e0o \u0111\u00f3.<\/li>\n
                        4. v\u1ecb tr\u00ed \u0111\u1ee9t \u1edf danh gi\u1edbi gi\u1eefa hai gen.<\/li>\n<\/ol>\n

                           C\u00e2u 10. Trong ch\u1ecdn gi\u1ed1ng, ng\u01b0\u1eddi ta s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p giao ph\u1ed1i c\u1eadn huy\u1ebft v\u00e0 t\u1ef1 th\u1ee5 ph\u1ea5n ch\u1ee7 y\u1ebfu \u0111\u1ec3<\/p>\n

                           \n
                           1. thay \u0111\u1ed5i m\u1ee9c ph\u1ea3n \u1ee9ng c\u1ee7a gi\u1ed1ng g\u1ed1c. \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0B. c\u1ea3i ti\u1ebfn gi\u1ed1ng c\u00f3 n\u0103ng su\u1ea5t th\u1ea5p.<\/li>\n
                           2. ki\u1ec3m tra ki\u1ec3u gen c\u1ee7a gi\u1ed1ng c\u1ea7n quan t\u00e2m. \u00a0 \u00a0 \u00a0 \u00a0D. c\u1ee7ng c\u1ed1 \u0111\u1eb7c t\u00ednh t\u1ed1t, t\u1ea1o d\u00f2ng thu\u1ea7n ch\u1ee7ng.<\/li>\n<\/ol>\n

                              C\u00e2u 11. \u1ede ru\u1ed3i gi\u1ea5m gen B quy \u0111\u1ecbnh th\u00e2n x\u00e1m tr\u1ed9i ho\u00e0n to\u00e0n so v\u1edbi gen b quy \u0111\u1ecbnh th\u00e2n \u0111en. Ph\u00e9p lai ru\u1ed3i \u0111\u1ef1c th\u00e2n x\u00e1m v\u1edbi ru\u1ed3i c\u00e1i th\u00e2n \u0111en thu \u0111\u01b0\u1ee3c F1 50% ru\u1ed3i th\u00e2n x\u00e1m; 50% ru\u1ed3i \u0111en. Cho ru\u1ed3i F1 giao ph\u1ed1i ng\u1eabu nhi\u00ean th\u1ebf h\u1ec7 F2 c\u00f3 t\u1ef7 l\u1ec7 c\u00e1c ki\u1ec3u gen l\u00e0<\/p>\n

                              \n
                              1. 0,125BB:0, 5Bb:0,375bb. \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0B.0,375BB:0, 625Bb:0,5625bb<\/li>\n
                              2. 0,25BB:0,5Bb:0,25bb \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0D. 0,5625BB:0,375Bb:0,0 625bb.<\/li>\n<\/ol>\n

                                 C\u00e2u 12: Cho bi\u1ebft c\u00e1c gen ph\u00e2n li \u0111\u1ed9c l\u1eadp v\u00e0 tr\u1ed9i ho\u00e0n to\u00e0n. Ph\u00e9p lai P: AaBbDdEe x AaBbDdEe cho th\u1ebf h\u1ec7 sau v\u1edbi ki\u1ec3u h\u00ecnh mang 3 t\u00ednh tr\u1ea1ng tr\u1ed9i v\u00e0 1 t\u00ednh tr\u1ea1ng l\u1eb7n v\u1edbi t\u1ec9 l\u1ec7<\/p>\n

                                 \n
                                 1. 27\/128. \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0B. 27\/256. \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 C. 27\/64. \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0D. 81\/256.<\/li>\n<\/ol>\n

                                    C\u00e2u 13: \u1ede ru\u1ed3i d\u1ea5m gen A: m\u1eaft \u0111\u1ecf, a: m\u1eaft tr\u1eafng; B: c\u00e1nh th\u01b0\u1eddng, b: c\u00e1nh ng\u1eafn. \u0110em lai ru\u1ed3i gi\u1ea5m c\u00e1i v\u1edbi ru\u1ed3i gi\u1ea5m \u0111\u1ef1c c\u00f9ng c\u00f3 ki\u1ec3u gen AB\/ab. Bi\u1ebft r\u1eb1ng \u0111\u00e3 x\u1ea3y ra ho\u00e1n v\u1ecb gen v\u1edbi t\u1ea7n s\u1ed1 f = 14%. T\u1ec9 l\u1ec7 ki\u1ec3u h\u00ecnh m\u1eaft \u0111\u1ecf, c\u00e1nh th\u01b0\u1eddng \u0111\u1eddi F1 b\u1eb1ng<\/p>\n

                                    \n
                                    1. 68,49 % \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 B. 71,5% \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 C.50,49% \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 D. 36,98%<\/li>\n<\/ol>\n

                                       C\u00e2u 19. T\u00e0i nguy\u00ean n\u00e0o kh\u00f4ng ph\u1ea3i l\u00e0 t\u00e0i nguy\u00ean n\u0103ng l\u01b0\u1ee3ng v\u0129nh c\u1eedu?<\/p>\n

                                       \n
                                       1. B\u1ee9c x\u1ea1 m\u1eb7t tr\u1eddi.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 B. N\u0103ng l\u01b0\u1ee3ng gi\u00f3.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 C. N\u0103ng l\u01b0\u1ee3ng thu\u1ef7 tri\u1ec1u.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 D. D\u1ea7u l\u1eeda<\/li>\n<\/ol>\n

                                          C\u00e2u 20. Cho bi\u1ebft m\u1ed7i c\u1eb7p t\u00ednh tr\u1ea1ng do m\u1ed9t c\u1eb7p gen quy \u0111\u1ecbnh v\u00e0 di truy\u1ec1n tr\u1ed9i ho\u00e0n to\u00e0n; t\u1ea7n s\u1ed1 ho\u00e1n v\u1ecb gen gi\u1eefa A v\u00e0 B l\u00e0 20%. X\u00e9t ph\u00e9p lai\u00a0 (Ab\/\/aB) XDEXdE x (Ab\/\/ab) XdEY , ki\u1ec3u h\u00ecnh A-bbddE- \u1edf \u0111\u1eddi con chi\u1ebfm t\u1ec9 l\u1ec7:<\/p>\n

                                          \n
                                          1. 45%.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 B. 35%.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 C. 22,5%.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 D. 40%.<\/li>\n<\/ol>\n

                                             C\u00e2u 21. Ph\u00e1t bi\u1ec3u n\u00e0o sau \u0111\u00e2y kh\u00f4ng \u0111\u00fang v\u1ec1 vai tr\u00f2 c\u1ee7a qu\u00e1 tr\u00ecnh giao ph\u1ed1i trong ti\u1ebfn h\u00f3a?<\/p>\n

                                             \n
                                             1. Giao ph\u1ed1i t\u1ea1o ra alen m\u1edbi trong qu\u1ea7n th\u1ec3.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 C. Giao ph\u1ed1i g\u00f3p ph\u1ea7n l\u00e0m t\u0103ng t\u00ednh \u0111a d\u1ea1ng di truy\u1ec1n.<\/li>\n
                                             2. Giao ph\u1ed1i l\u00e0m trung h\u00f2a t\u00ednh c\u00f3 h\u1ea1i c\u1ee7a \u0111\u1ed9t bi\u1ebfn.\u00a0\u00a0\u00a0 D. Giao ph\u1ed1i cung c\u1ea5p nguy\u00ean li\u1ec7u th\u1ee9 c\u1ea5p cho ch\u1ecdn l\u1ecdc t\u1ef1 nhi\u00ean.<\/li>\n<\/ol>\n

                                                C\u00e2u 22. T\u1ea1i th\u00e0nh ph\u1ed1 A, nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh 30 oC, m\u1ed9t l\u00f2ai b\u1ecd c\u00e1nh c\u1ee9ng c\u00f3 chu k\u00ec s\u1ed1ng l\u00e0 10 ng\u00e0y \u0111\u00eam. C\u00f2n \u1edf th\u00e0nh ph\u1ed1 B, nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh 18 oC th\u00ec chu k\u00ec s\u1ed1ng c\u1ee7a lo\u00e0i n\u00e0y l\u00e0 30 ng\u00e0y \u0111\u00eam. S\u1ed1 th\u1ebf h\u1ec7 trung b\u00ecnh trong n\u0103m 2010 c\u1ee7a l\u00f2ai tr\u00ean t\u1ea1i th\u00e0nh ph\u1ed1 A v\u00e0 th\u00e0nh ph\u1ed1 B l\u1ea7n l\u01b0\u1ee3t l\u00e0:<\/p>\n

                                                \n
                                                1. 18 v\u00e0 36\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 B. 12 v\u00e0 18\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 C. 36 v\u00e0 13\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 D. 37 v\u00e0 12<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"

                                                   M\u1eabu 1: \u0111\u1ec1 thi th\u1eed thpt m\u00f4n Sinh 2017 chu\u00e2n b\u1ecb cho k\u00ec thi thpt qu\u1ed1c gia C\u00e2u 1. \u1ede ru\u1ed3i gi\u1ea5m, gen A quy \u0111\u1ecbnh t\u00ednh tr\u1ea1ng m\u1eaft \u0111\u1ecf, gen a \u0111\u1ed9t bi\u1ebfn quy \u0111\u1ecbnh t\u00ednh tr\u1ea1ng m\u1eaft tr\u1eafng. Khi 2 gen n\u00f3i tr\u00ean t\u1ef1 t\u00e1i b\u1ea3n 4 l\u1ea7n th\u00ec s\u1ed1 nucl\u00ea\u00f4tit trong c\u00e1c […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[129],"tags":[],"yoast_head":"\n