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{"id":22733,"date":"2018-03-20T15:30:30","date_gmt":"2018-03-20T08:30:30","guid":{"rendered":"https:\/\/lop12.edu.vn\/?p=22733"},"modified":"2018-03-20T15:30:30","modified_gmt":"2018-03-20T08:30:30","slug":"phan-nam-chuong-5-bai-22-bao-ve-von-gen-cua-loai-nguoi-va-mot-so-van-de-xa-hoi-cua-di-truyen-hoc","status":"publish","type":"post","link":"https:\/\/lop12.edu.vn\/phan-nam-chuong-5-bai-22-bao-ve-von-gen-cua-loai-nguoi-va-mot-so-van-de-xa-hoi-cua-di-truyen-hoc\/","title":{"rendered":"Ph\u1ea7n N\u0103m – Ch\u01b0\u01a1ng 5 – B\u00e0i 22: B\u1ea3o v\u1ec7 v\u1ed1n gen c\u1ee7a lo\u00e0i ng\u01b0\u1eddi v\u00e0 m\u1ed9t s\u1ed1 v\u1ea5n \u0111\u1ec1 x\u00e3 h\u1ed9i c\u1ee7a di truy\u1ec1n h\u1ecdc"},"content":{"rendered":"

B\u00e0i 1 (trang 96 SGK Sinh h\u1ecdc 12):\u00a0G\u00e1nh n\u1eb7ng di truy\u1ec1n trong c\u00e1c qu\u1ea7n th\u1ec3 ng\u01b0\u1eddi \u0111\u01b0\u1ee3c bi\u1ec3u hi\u1ec7n nh\u01b0 th\u1ebf n\u00e0o?<\/strong><\/p>\n

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

C\u00e1c lo\u1ea1i \u0111\u1ed9t bi\u1ebfn lu\u00f4n ph\u00e1t sinh v\u00e0 ch\u1ec9 m\u1ed9t ph\u1ea7n b\u1ecb lo\u1ea1i b\u1ecf kh\u1ecfi qu\u1ea7n th\u1ec3 ng\u01b0\u1eddi do ch\u1ecdn l\u1ecdc t\u1ef1 nhi\u00ean v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 ng\u1eabu nhi\u00ean . Nhi\u1ec1u lo\u1ea1i gen \u0111\u1ed9t bi\u1ebfn \u0111\u01b0\u1ee3c di truy\u1ec1n t\u1eeb th\u1ebf h\u1ec7 n\u00e0y sang th\u1ebf h\u1ec7 kh\u00e1c t\u1ea1o ra nh\u1eefng “g\u00e1nh n\u1eb7ng di truy\u1ec1n” cho lo\u00e0i ng\u01b0\u1eddi. \u0110\u00f3 l\u00e0 s\u1ef1 t\u1ed3n t\u1ea1i trong v\u1ed1n gen c\u1ee7a qu\u1ea7n th\u1ec3 ng\u01b0\u1eddi c\u00e1c \u0111\u1ed9t bi\u1ebfn g\u00e2y ch\u1ebft, n\u1eeda g\u00e2y ch\u1ebft\u2026 Nh\u1eefng \u0111\u1ed9t bi\u1ebfn n\u00e0y khi \u1edf tr\u1ea1ng th\u00e1i \u0111\u1ed3ng h\u1ee3p s\u1ebd l\u00e0m ch\u1ebft c\u00e1 th\u1ec3 hay l\u00e0m gi\u1ea3m s\u1ee9c s\u1ed1ng c\u1ee7a h\u1ecd.. Con ng\u01b0\u1eddi \u0111ang ph\u1ea3i ch\u1ecbu m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng l\u1edbn c\u00e1c b\u1ec7nh di truy\u1ec1n.<\/p>\n

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\n

B\u00e0i 2 (trang 96 SGK Sinh h\u1ecdc 12):\u00a0\u0110\u1ec3 b\u1ea3o v\u1ec7 v\u1ed1n gen c\u1ee7a lo\u00e0i ng\u01b0\u1eddi c\u1ea7n ti\u1ebfn h\u00e0nh nh\u1eefng bi\u1ec7n ph\u00e1p g\u00ec?<\/strong><\/p>\n

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

Nh\u1eefng bi\u1ec7n ph\u00e1p \u0111\u1ec3 b\u1ea3o v\u1ec7 v\u1ed1n gen c\u1ee7a lo\u00e0i ng\u01b0\u1eddi:<\/p>\n

– T\u1ea1o m\u00f4i tr\u01b0\u1eddng s\u1ea1ch nh\u1eb1m h\u1ea1n ch\u1ebf c\u00e1c t\u00e1c nh\u00e2n g\u00e2y \u0111\u1ed9t bi\u1ebfn.<\/p>\n

– S\u1eed d\u1ee5ng t\u01b0 v\u1ea5n di truy\u1ec1n v\u00e0 vi\u1ec7c sang l\u1ecdc tr\u01b0\u1edbc khi sinh: C\u1ea7n ch\u1ea9n \u0111o\u00e1n, \u0111\u01b0a ra l\u1eddi khuy\u00ean cho c\u00e1c c\u1eb7p v\u1ee3 ch\u1ed3ng hay th\u1ef1c hi\u1ec7n c\u00e1c x\u00e9t nghi\u1ec7m tr\u01b0\u1edbc khi sinh.<\/p>\n

– S\u1eed d\u1ee5ng li\u1ec7u ph\u00e1p gen: thay th\u1ebf c\u00e1c gen \u0111\u1ed9t bi\u1ebfn g\u00e2y b\u1ec7nh \u1edf ng\u01b0\u1eddi b\u1eb1ng c\u00e1c gen l\u00e0nh.<\/p>\n

B\u00e0i 3 (trang 96 SGK Sinh h\u1ecdc 12):\u00a0N\u00eau m\u1ed9t s\u1ed1 v\u1ea5n \u0111\u1ec1 x\u00e3 h\u1ed9i c\u1ee7a Di truy\u1ec1n h\u1ecdc.<\/strong><\/p>\n

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

M\u1ed9t s\u1ed1 v\u1ea5n \u0111\u1ec1 x\u00e3 h\u1ed9i c\u1ee7a Di truy\u1ec1n h\u1ecdc:<\/p>\n

* T\u00e1c \u0111\u1ed9ng x\u00e3 h\u1ed9i c\u1ee7a vi\u1ec7c gi\u1ea3i m\u00e3 b\u1ed9 gen ng\u01b0\u1eddi<\/p>\n

Vi\u1ec7c gi\u1ea3i m\u00e3 b\u1ed9 gen ng\u01b0\u1eddi ngo\u00e0i nh\u1eefng vi\u1ec7c t\u00edch c\u1ef1c m\u00e0 n\u00f3 \u0111em l\u1ea1i c\u0169ng l\u00e0m n\u1ea3y sinh nhi\u1ec1u v\u1ea5n \u0111\u1ec1 t\u00e2m l\u00ed x\u00e3 h\u1ed9i nh\u01b0:<\/p>\n

– Li\u1ec7u nh\u1eefng hi\u1ec3u bi\u1ebft v\u1ec1 h\u1ed3 s\u01a1 di truy\u1ec1n c\u1ee7a m\u1ed7i c\u00e1 nh\u00e2n c\u00f3 cho ph\u00e9p tr\u00e1nh \u0111\u01b0\u1ee3c b\u1ec7nh t\u1eadt di truy\u1ec1n hay ch\u1ec9 \u0111\u01a1n thu\u1ea7n th\u00f4ng b\u00e1o v\u1ec1 c\u00e1i ch\u1ebft s\u1edbm c\u00f3 th\u1ec3 x\u1ea3y ra v\u00e0 kh\u00f4ng th\u1ec3 tr\u00e1nh kh\u1ecfi.<\/p>\n

– H\u1ed3 s\u01a1 di truy\u1ec1n c\u1ee7a m\u1ed7i ng\u01b0\u1eddi li\u1ec7u c\u00f3 b\u1ecb x\u00e3 h\u1ed9i s\u1eed d\u1ee5ng \u0111\u1ec3 ch\u1ed1ng l\u1ea1i ch\u00ednh h\u1ecd hay kh\u00f4ng? (V\u1ea5n \u0111\u1ec1 xin vi\u1ec7c l\u00e0m, h\u00f4n nh\u00e2n\u2026).<\/p>\n

* V\u1ea5n \u0111\u1ec1 ph\u00e1t sinh do c\u00f4ng ngh\u1ec7 gen v\u00e0 c\u00f4ng ngh\u1ec7 t\u1ebf b\u00e0o<\/p>\n

Vi\u1ec7c t\u1ea1o c\u00e1c sinh v\u1eadt bi\u1ebfn \u0111\u1ed5i gen ngo\u00e0i nh\u1eefng l\u1ee3i \u00edch kinh t\u1ebf v\u00e0 khoa h\u1ecdc c\u0169ng n\u1ea3y sinh nhi\u1ec1u v\u1ea5n \u0111\u1ec1 nh\u01b0 c\u00e1c gen kh\u00e1ng thu\u1ed1c kh\u00e1ng sinh t\u1eeb sinh v\u1eadt g\u00e2y b\u1ec7nh cho ng\u01b0\u1eddi hay kh\u00f4ng?<\/p>\n

\u0102n c\u00e1c s\u1ea3n ph\u1ea9m t\u1eeb sinh v\u1eadt bi\u1ebfn \u0111\u1ed5i gen c\u00f3 an to\u00e0n cho s\u1ee9c kho\u1ebb con ng\u01b0\u1eddi v\u00e0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn h\u1ec7 gen c\u1ee7a ng\u01b0\u1eddi kh\u00f4ng? C\u00e1c gen kh\u00e1ng thu\u1ed1c di\u1ec7t c\u1ecf \u1edf c\u00e2y tr\u1ed3ng bi\u1ebfn \u0111\u1ed5i gen c\u00f3 ph\u00e1t t\u00e1n sang c\u1ecf d\u1ea1i hay kh\u00f4ng? C\u00e1c ch\u1ea5t \u0111\u1ed9c ti\u1ebft ra t\u1eeb c\u00e2y chuy\u1ec3n gen kh\u00e1ng s\u00e2u h\u1ea1i c\u00f3 t\u00e1c \u0111\u1ed9ng t\u1edbi nh\u1eefng c\u00f4n tr\u00f9ng c\u00f3 \u00edch hay kh\u00f4ng?<\/p>\n

Ngo\u00e0i ra, c\u00f2n lo ng\u1ea1i r\u1eb1ng li\u1ec7u con ng\u01b0\u1eddi c\u00f3 s\u1eed d\u1ee5ng k\u0129 thu\u1eadt nh\u00e2n b\u1ea3n c\u00f4 t\u00ednh \u0111\u1ec3 t\u1ea1o ra ng\u01b0\u1eddi nh\u00e2n b\u1ea3n hay kh\u00f4ng?<\/p>\n

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B\u00e0i 4 (trang 96 SGK Sinh h\u1ecdc 12):\u00a0H\u00e3y ch\u1ecdn ph\u01b0\u01a1ng \u00e1n tr\u1ea3 l\u1eddi \u0111\u00fang.<\/strong><\/p>\n

Trong ch\u1ea9n \u0111o\u00e1n tr\u01b0\u1edbc sinh, k\u0129 thu\u1eadt ch\u1ecdc d\u00f2 d\u1ecbch \u1ed1i nh\u1eb1m kh\u1ea3o s\u00e1t<\/strong><\/p>\n

\u00a0a) T\u00ednh ch\u1ea5t c\u1ee7a n\u01b0\u1edbc \u1ed1i<\/strong><\/p>\n

\u00a0 \u00a0 b) T\u1ebf b\u00e0o t\u1eed cung c\u1ee7a ng\u01b0\u1eddi m\u1eb9<\/strong><\/p>\n

\u00a0 \u00a0 c) T\u1ebf b\u00e0o thai bong ra trong n\u01b0\u1edbc \u1ed1i<\/strong><\/p>\n

\u00a0 \u00a0 d) C\u1ea3 a v\u00e0 b.<\/strong><\/p>\n

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

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

 <\/p>\n

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

B\u00e0i 1 (trang 96 SGK Sinh h\u1ecdc 12):\u00a0G\u00e1nh n\u1eb7ng di truy\u1ec1n trong c\u00e1c qu\u1ea7n th\u1ec3 ng\u01b0\u1eddi \u0111\u01b0\u1ee3c bi\u1ec3u hi\u1ec7n nh\u01b0 th\u1ebf n\u00e0o? L\u1eddi gi\u1ea3i: C\u00e1c lo\u1ea1i \u0111\u1ed9t bi\u1ebfn lu\u00f4n ph\u00e1t sinh v\u00e0 ch\u1ec9 m\u1ed9t ph\u1ea7n b\u1ecb lo\u1ea1i b\u1ecf kh\u1ecfi qu\u1ea7n th\u1ec3 ng\u01b0\u1eddi do ch\u1ecdn l\u1ecdc t\u1ef1 nhi\u00ean v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 ng\u1eabu nhi\u00ean . Nhi\u1ec1u […]<\/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 5 - B\u00e0i 22: B\u1ea3o v\u1ec7 v\u1ed1n gen c\u1ee7a lo\u00e0i ng\u01b0\u1eddi v\u00e0 m\u1ed9t s\u1ed1 v\u1ea5n \u0111\u1ec1 x\u00e3 h\u1ed9i c\u1ee7a di truy\u1ec1n h\u1ecdc<\/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-5-bai-22-bao-ve-von-gen-cua-loai-nguoi-va-mot-so-van-de-xa-hoi-cua-di-truyen-hoc\/\" \/>\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 5 - B\u00e0i 22: B\u1ea3o v\u1ec7 v\u1ed1n gen c\u1ee7a lo\u00e0i ng\u01b0\u1eddi v\u00e0 m\u1ed9t s\u1ed1 v\u1ea5n \u0111\u1ec1 x\u00e3 h\u1ed9i c\u1ee7a di truy\u1ec1n h\u1ecdc\" \/>\n<meta property=\"og:description\" content=\"B\u00e0i 1 (trang 96 SGK Sinh h\u1ecdc 12):\u00a0G\u00e1nh n\u1eb7ng di truy\u1ec1n trong c\u00e1c qu\u1ea7n th\u1ec3 ng\u01b0\u1eddi \u0111\u01b0\u1ee3c bi\u1ec3u hi\u1ec7n nh\u01b0 th\u1ebf n\u00e0o? L\u1eddi gi\u1ea3i: C\u00e1c lo\u1ea1i \u0111\u1ed9t bi\u1ebfn lu\u00f4n ph\u00e1t sinh v\u00e0 ch\u1ec9 m\u1ed9t ph\u1ea7n b\u1ecb lo\u1ea1i b\u1ecf kh\u1ecfi qu\u1ea7n th\u1ec3 ng\u01b0\u1eddi do ch\u1ecdn l\u1ecdc t\u1ef1 nhi\u00ean v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 ng\u1eabu nhi\u00ean . 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