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{"id":22740,"date":"2018-03-20T15:36:37","date_gmt":"2018-03-20T08:36:37","guid":{"rendered":"https:\/\/lop12.edu.vn\/?p=22740"},"modified":"2018-03-20T15:37:11","modified_gmt":"2018-03-20T08:37:11","slug":"phan-nam-chuong-4","status":"publish","type":"post","link":"https:\/\/lop12.edu.vn\/phan-nam-chuong-4\/","title":{"rendered":"Ph\u1ea7n N\u0103m – Ch\u01b0\u01a1ng 4 – B\u00e0i 20: T\u1ea1o gi\u1ed1ng nh\u1edd c\u00f4ng ngh\u1ec7 gen"},"content":{"rendered":"

B\u00e0i 1 (trang 86 SGK Sinh h\u1ecdc 12):\u00a0H\u00e3y ch\u1ecdn ph\u01b0\u01a1ng \u00e1n tr\u1ea3 l\u1eddi \u0111\u00fang.<\/strong><\/p>\n

Ng\u01b0\u1eddi ta ph\u1ea3i d\u00f9ng th\u1ec3 truy\u1ec1n \u0111\u1ec3 chuy\u1ec3n m\u1ed9t gen t\u1eeb t\u1ebf b\u00e0o n\u00e0y sang t\u1ebf b\u00e0o kh\u00e1c l\u00e0 v\u00ec:<\/strong><\/p>\n

A. N\u1ebfu kh\u00f4ng c\u00f3 th\u1ec3 truy\u1ec1n th\u00ec gen c\u1ea7n chuy\u1ec3n s\u1ebd kh\u00f4ng chui v\u00e0o \u0111\u01b0\u1ee3c t\u1ebf b\u00e0o nh\u1eadn.<\/p>\n

B. N\u1ebfu kh\u00f4ng c\u00f3 th\u1ec3 truy\u1ec1n th\u00ec gen c\u00f3 v\u00e0o \u0111\u01b0\u1ee3c t\u1ebf b\u00e0o nh\u1eadn c\u0169ng kh\u00f4ng th\u1ec3 nh\u00e2n l\u00ean v\u00e0 ph\u00e2n li \u0111\u1ed3ng \u0111\u1ec1u v\u1ec1 c\u00e1c t\u1ebf b\u00e0o con khi t\u1ebf b\u00e0o ph\u00e2n chia.<\/p>\n

C. N\u1ebfu kh\u00f4ng c\u00f3 th\u1ec3 truy\u1ec1n th\u00ec kh\u00f3 c\u00f3 th\u1ec3 thu \u0111\u01b0\u1ee3c nhi\u1ec1u s\u1ea3n ph\u1ea9m c\u1ee7a gen trong t\u1ebf b\u00e0o nh\u1eadn.<\/p>\n

D. N\u1ebfu kh\u00f4ng c\u00f3 th\u1ec3 truy\u1ec1n th\u00ec gen s\u1ebd kh\u00f4ng th\u1ec3 t\u1ea1o ra s\u1ea3n ph\u1ea9m trong t\u1ebf b\u00e0o nh\u1eadn.<\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

\u0110\u00e1p \u00e1n: C.<\/p>\n

B\u00e0i 2 (trang 86 SGK Sinh h\u1ecdc 12):\u00a0H\u1ec7 gen c\u1ee7a sinh v\u1eadt c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c bi\u1ebfn \u0111\u1ed5i b\u1eb1ng nh\u1eefng c\u00e1ch n\u00e0o?<\/strong><\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

\u0110\u1ec3 l\u00e0m bi\u1ebfn \u0111\u1ed5i h\u1ec7 gen c\u1ee7a m\u1ed9t sinh v\u1eadt, ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 ti\u1ebfn h\u00e0nh theo 3 c\u00e1ch sau:<\/p>\n

– \u0110\u01b0a th\u00eam m\u1ed9t gen l\u1ea1 (th\u01b0\u1eddng l\u00e0 gen c\u1ee7a m\u1ed9t lo\u00e0i kh\u00e1c) v\u00e0o h\u1ec7 gen. Sinh v\u1eadt c\u00f3 \u0111\u01b0\u1ee3c gen c\u1ee7a lo\u00e0i kh\u00e1c b\u1eb1ng c\u00e1ch n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 sinh v\u1eadt chuy\u1ec3n gen.<\/p>\n

– L\u00e0m bi\u1ebfn \u0111\u1ed5i m\u1ed9t gen \u0111\u00e3 c\u00f3 s\u1eb5n trong h\u1ec7 gen. M\u1ed9t gen n\u00e0o \u0111\u00f3 c\u1ee7a sinh v\u1eadt c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u00e0m bi\u1ebfn \u0111\u1ed5i cho n\u00f3 s\u1ea3n xu\u1ea5t nhi\u1ec1u s\u1ea3n ph\u1ea9m h\u01a1n ho\u1eb7c l\u00e0m cho n\u00f3 \u0111\u01b0\u1ee3c bi\u1ec3u hi\u1ec7n m\u1ed9t c\u00e1ch kh\u00e1c th\u01b0\u1eddng.<\/p>\n

– Lo\u1ea1i b\u1ecf ho\u1eb7c l\u00e0m b\u1ea5t ho\u1ea1t m\u1ed9t gen n\u00e0o \u0111\u00f3 kh\u00f4ng mong mu\u1ed1n trong h\u1ec7 gen. V\u00ed d\u1ee5, c\u00e0 chua bi\u1ebfn \u0111\u1ed5i gen c\u00f3 gen l\u00e0m ch\u00edn qu\u1ea3 b\u1ecb b\u1ea5t ho\u1ea1t, v\u00ec th\u1ebf qu\u1ea3 c\u00e0 chua c\u00f3 th\u1ec3 v\u1eadn chuy\u1ec3n \u0111i xa ho\u1eb7c b\u1ea3o qu\u1ea3n l\u00e2u d\u00e0i.<\/p>\n

\n

B\u00e0i 3 (trang 86 SGK Sinh h\u1ecdc 12):\u00a0Tr\u00ecnh b\u00e0y ph\u01b0\u01a1ng ph\u00e1p t\u1ea1o \u0111\u1ed9ng v\u1eadt chuy\u1ec3n gen v\u00e0 nh\u1eefng th\u00e0nh t\u1ef1u t\u1ea1o gi\u1ed1ng \u0111\u1ed9ng v\u1eadt bi\u1ebfn \u0111\u1ed5i gen.<\/strong><\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

* Ph\u01b0\u01a1ng ph\u00e1p t\u1ea1o \u0111\u1ed9ng v\u1eadt chuy\u1ec3n gen:<\/p>\n

– Ng\u01b0\u1eddi ta l\u1ea5y tr\u1ee9ng ra kh\u1ecfi con v\u1eadt n\u00e0o \u0111\u00f3 r\u1ed3i cho th\u1ee5 tinh trong \u1ed1ng nghi\u1ec7m.<\/p>\n

– Ti\u00eam gen c\u1ea7n chuy\u1ec3n v\u00e0o h\u1ee3p t\u1eed v\u00e0 h\u1ee3p t\u1eed ph\u00e1t tri\u1ec3n th\u00e0nh ph\u00f4i.<\/p>\n

– C\u1ea5y ph\u00f4i \u0111\u00e3 \u0111\u01b0\u1ee3c chuy\u1ec3n gen v\u00e0o trong t\u1eed cung c\u1ee7a con v\u1eadt kh\u00e1c \u0111\u1ec3 n\u00f3 mang thai v\u00e0 sinh \u0111\u1ebb b\u00ecnh th\u01b0\u1eddng.<\/p>\n

\n
\n

N\u1ebfu gen \u0111\u01b0\u1ee3c chuy\u1ec3n g\u1eafn th\u00e0nh c\u00f4ng v\u00e0o h\u1ec7 gen c\u1ee7a h\u1ee3p t\u1eed v\u00e0 ph\u00f4i ph\u00e1t tri\u1ec3n b\u00ecnh th\u01b0\u1eddng th\u00ec s\u1ebd cho ra \u0111\u1eddi m\u1ed9t con v\u1eadt chuy\u1ec3n gen.<\/p>\n

* Th\u00e0nh t\u1ef1u t\u1ea1o gi\u1ed1ng \u0111\u1ed9ng v\u1eadt bi\u1ebfn \u0111\u1ed5i gen<\/p>\n

Ng\u01b0\u1eddi ta \u0111\u00e3 chuy\u1ec3n th\u00e0nh c\u00f4ng gen pr\u00f4t\u00eain huy\u1ebft thanh ng\u01b0\u1eddi v\u00e0o c\u1eebu v\u00e0 chuy\u1ec3n th\u00e0nh c\u00f4ng gen ch\u1ee9a hoocm\u00f4n sinh tr\u01b0\u1edfng c\u1ee7a chu\u1ed9t c\u1ed1ng v\u00e0 chu\u1ed9t nh\u1eaft.<\/p>\n

B\u00e0i 4 (trang 86 SGK Sinh h\u1ecdc 12):\u00a0Tr\u00ecnh b\u00e0y nh\u1eefng th\u00e0nh t\u1ef1u t\u1ea1o gi\u1ed1ng c\u00e2y tr\u1ed3ng v\u00e0 vi sinh v\u1eadt bi\u1ebfn \u0111\u1ed5i gen.<\/strong><\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

* Th\u00e0nh t\u1ef1u t\u1ea1o gi\u1ed1ng c\u00e2y tr\u1ed3ng bi\u1ebfn \u0111\u1ed5i gen:<\/p>\n

– Nh\u1edd c\u00f4ng ngh\u1ec7 gen, ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 t\u1ea1o ra nhi\u1ec1u gi\u1ed1ng c\u00e2y tr\u1ed3ng qu\u00fd hi\u1ebfm.<\/p>\n

+ Chuy\u1ec3n gen tr\u1eeb s\u00e2u t\u1eeb vi khu\u1ea9n v\u00e0o c\u00e2y b\u00f4ng v\u00e0 \u0111\u00e3 t\u1ea1o \u0111\u01b0\u1ee3c gi\u1ed1ng c\u00e2y b\u00f4ng kh\u00e1ng s\u00e2u h\u1ea1i.<\/p>\n

+ T\u1ea1o \u0111\u01b0\u1ee3c gi\u1ed1ng l\u00faa “g\u1ea1o v\u00e0ng” c\u00f3 kh\u1ea3 n\u0103ng t\u1ed5ng h\u1ee3p \uf062- car\u00f4ten (ti\u1ec1m ch\u1ea5t t\u1ea1o vitamin A) trong h\u1ea1t.<\/p>\n

– T\u1ea1o gi\u1ed1ng c\u00e2y bi\u1ebfn \u0111\u1ed5i gen c\u00f3 s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c b\u1ea3o qu\u1ea3n t\u1ed1t h\u01a1n c\u0169ng \u0111\u01b0\u1ee3c c\u00e1c nh\u00e0 khoa h\u1ecdc quan t\u00e2m. V\u00ed d\u1ee5: gi\u1ed1ng c\u00e0 chua c\u00f3 gen s\u1ea3n sinh \u00eatilen \u0111\u00e3 \u0111\u01b0\u1ee3c l\u00e0m cho b\u1ea5t ho\u1ea1t, v\u00ec th\u1ebf c\u00f3 qu\u1ea3 kh\u00f4ng ch\u00edn n\u00ean c\u00f3 th\u1ec3 v\u1eadn chuy\u1ec3n \u0111i xa ho\u1eb7c \u0111\u1ec3 l\u00e2u kh\u00f4ng b\u1ecb h\u1ecfng.<\/p>\n

* Th\u00e0nh t\u1ef1u t\u1ea1o gi\u1ed1ng sinh v\u1eadt bi\u1ebfn \u0111\u1ed5i gen:<\/p>\n

– T\u1ea1o ra c\u00e1c d\u00f2ng vi khu\u1ea9n mang gen c\u1ee7a lo\u00e0i kh\u00e1c c\u00f3 th\u1ec3 nhanh ch\u00f3ng s\u1ea3n sinh ra m\u1ed9t l\u01b0\u1ee3ng l\u1edbn insulin l\u00e0 thu\u1ed1c ch\u1eefa b\u1ec7nh ti\u1ec3u \u0111\u01b0\u1eddng \u1edf ng\u01b0\u1eddi.<\/p>\n

– Hi\u1ec7n nay, nhi\u1ec1u d\u00f2ng vi sinh v\u1eadt bi\u1ebfn \u0111\u1ed5i gen \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1ea1o ra nh\u1eb1m ph\u1ee5c v\u1ee5 c\u00e1c m\u1ee5c \u0111\u00edch kh\u00e1c nhau c\u1ee7a con ng\u01b0\u1eddi, trong \u0111\u00f3 c\u00f3 vi\u1ec7c l\u00e0m s\u1ea1ch m\u00f4i tr\u01b0\u1eddng nh\u01b0 ph\u00e2n hu\u1ef7 r\u00e1c th\u1ea3i, d\u1ea7u loang\u2026<\/p>\n

B\u00e0i 5 (trang 86 SGK Sinh h\u1ecdc 12):\u00a0Trong vi\u1ec7c thay th\u1ebf c\u00e1c gen g\u00e2y b\u1ec7nh \u1edf ng\u01b0\u1eddi b\u1eb1ng c\u00e1c gen l\u00e0nh, t\u1ea1i sao c\u00e1c nh\u00e0 khoa h\u1ecdc l\u1ea1i nghi\u00ean c\u1ee9u s\u1eed d\u1ee5ng virut l\u00e0m th\u1ec3 truy\u1ec1n m\u00e0 kh\u00f4ng d\u00f9ng th\u1ec3 truy\u1ec1n plasmit?<\/strong><\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

Trong vi\u1ec7c thay th\u1ebf c\u00e1c gen b\u1ec7nh \u1edf ng\u01b0\u1eddi b\u1eb1ng c\u00e1c gen l\u00e0nh, ng\u01b0\u1eddi ta l\u1ea1i s\u1eed d\u1ee5ng virut l\u00e0m th\u1ec3 truy\u1ec1n m\u00e0 kh\u00f4ng d\u00f9ng plasmit l\u00e0m th\u1ec3 truy\u1ec1n l\u00e0 v\u00ec:<\/p>\n

Do gen c\u1ee7a ng\u01b0\u1eddi ph\u00e2n m\u1ea3nh n\u00ean khi phi\u00ean m\u00e3 c\u1ea7n ph\u1ea3i c\u1eaft b\u1ecf c\u00e1c \u0111o\u1ea1i intr\u00f4. Tuy nhi\u00ean, t\u1ebf b\u00e0o vi khu\u1ea9n l\u1ea1i kh\u00f4ng c\u00f3 h\u1ec7 enzim c\u1eaft b\u1ecf c\u00e1c intr\u00f4 trong gen ng\u01b0\u1eddi n\u00ean mARN \u0111\u01b0\u1ee3c phi\u00ean m\u00e3 t\u1eeb gen ng\u01b0\u1eddi trong t\u1ebf b\u00e0o vi khu\u1ea9n s\u1ebd kh\u00f4ng \u0111\u01b0\u1ee3c d\u1ecbch m\u00e3 ho\u1eb7c s\u1ebd \u0111\u01b0\u1ee3c d\u1ecbch m\u00e3 c\u1ea3 ph\u1ea7n intr\u00f4 n\u00ean s\u1ebd cho ra pr\u00f4t\u00eain b\u1ea5t b\u00ecnh th\u01b0\u1eddng.<\/p>\n

 <\/p>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

B\u00e0i 1 (trang 86 SGK Sinh h\u1ecdc 12):\u00a0H\u00e3y ch\u1ecdn ph\u01b0\u01a1ng \u00e1n tr\u1ea3 l\u1eddi \u0111\u00fang. Ng\u01b0\u1eddi ta ph\u1ea3i d\u00f9ng th\u1ec3 truy\u1ec1n \u0111\u1ec3 chuy\u1ec3n m\u1ed9t gen t\u1eeb t\u1ebf b\u00e0o n\u00e0y sang t\u1ebf b\u00e0o kh\u00e1c l\u00e0 v\u00ec: A. N\u1ebfu kh\u00f4ng c\u00f3 th\u1ec3 truy\u1ec1n th\u00ec gen c\u1ea7n chuy\u1ec3n s\u1ebd kh\u00f4ng chui v\u00e0o \u0111\u01b0\u1ee3c t\u1ebf b\u00e0o nh\u1eadn. B. N\u1ebfu kh\u00f4ng […]<\/p>\n","protected":false},"author":3,"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":[1307],"tags":[1397,1398],"yoast_head":"\nPh\u1ea7n N\u0103m - Ch\u01b0\u01a1ng 4 - B\u00e0i 20: T\u1ea1o gi\u1ed1ng nh\u1edd c\u00f4ng ngh\u1ec7 gen<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lop12.edu.vn\/phan-nam-chuong-4\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ph\u1ea7n N\u0103m - Ch\u01b0\u01a1ng 4 - B\u00e0i 20: T\u1ea1o gi\u1ed1ng nh\u1edd c\u00f4ng ngh\u1ec7 gen\" \/>\n<meta property=\"og:description\" content=\"B\u00e0i 1 (trang 86 SGK Sinh h\u1ecdc 12):\u00a0H\u00e3y ch\u1ecdn ph\u01b0\u01a1ng \u00e1n tr\u1ea3 l\u1eddi \u0111\u00fang. Ng\u01b0\u1eddi ta ph\u1ea3i d\u00f9ng th\u1ec3 truy\u1ec1n \u0111\u1ec3 chuy\u1ec3n m\u1ed9t gen t\u1eeb t\u1ebf b\u00e0o n\u00e0y sang t\u1ebf b\u00e0o kh\u00e1c l\u00e0 v\u00ec: A. N\u1ebfu kh\u00f4ng c\u00f3 th\u1ec3 truy\u1ec1n th\u00ec gen c\u1ea7n chuy\u1ec3n s\u1ebd kh\u00f4ng chui v\u00e0o \u0111\u01b0\u1ee3c t\u1ebf b\u00e0o nh\u1eadn. B. 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