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{"id":22760,"date":"2018-03-20T15:40:00","date_gmt":"2018-03-20T08:40:00","guid":{"rendered":"https:\/\/lop12.edu.vn\/?p=22760"},"modified":"2018-03-20T15:40:00","modified_gmt":"2018-03-20T08:40:00","slug":"phan-nam-chuong-4-bai-19-tao-giong-bang-phuong-phap-gay-dot-bien-va-cong-nghe-te-bao","status":"publish","type":"post","link":"https:\/\/lop12.edu.vn\/phan-nam-chuong-4-bai-19-tao-giong-bang-phuong-phap-gay-dot-bien-va-cong-nghe-te-bao\/","title":{"rendered":"Ph\u1ea7n N\u0103m – Ch\u01b0\u01a1ng 4 – B\u00e0i 19: T\u1ea1o gi\u1ed1ng b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p g\u00e2y \u0111\u1ed9t bi\u1ebfn v\u00e0 c\u00f4ng ngh\u1ec7 t\u1ebf b\u00e0o"},"content":{"rendered":"

B\u00e0i 1 (trang 82 SGK Sinh h\u1ecdc 12):\u00a0Gi\u1ea3 s\u1eed c\u00f3 m\u1ed9t gi\u1ed1ng c\u00e2y c\u00e0 chua c\u00f3 gen A quy \u0111\u1ecbnh m\u1ed9t t\u00ednh tr\u1ea1ng kh\u00f4ng mong mu\u1ed1n (d\u1ec5 m\u1eafc b\u1ec7nh X). H\u00e3y n\u00eau quy tr\u00ecnh t\u1ea1o th\u1ec3 \u0111\u1ed9t bi\u1ebfn mang ki\u1ec3u gen aa c\u00f3 kh\u1ea3 n\u0103ng kh\u00e1ng b\u1ec7nh X.<\/strong><\/p>\n

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

N\u1ebfu c\u00f3 m\u1ed9t gi\u1ed1ng c\u00e0 chua c\u00f3 gen A quy \u0111\u1ecbnh t\u00ednh tr\u1ea1ng kh\u00f4ng mong mu\u1ed1n (d\u1ec5 m\u1eafc b\u1ec7nh X), ta c\u00f3 th\u1ec3 d\u00f9ng ph\u01b0\u01a1ng ph\u00e1p g\u00e2y \u0111\u1ed9t bi\u1ebfn b\u1eb1ng tia ph\u00f3ng x\u1ea1 ho\u1eb7c h\u00f3a ch\u1ea5t. V\u00ed d\u1ee5, x\u1eed l\u00ed h\u1ea1t gi\u1ed1ng b\u1eb1ng tia ph\u00f3ng x\u1ea1 ho\u1eb7c ng\u00e2m h\u00f3a ch\u1ea5t \u0111\u1ec3 g\u00e2y \u0111\u1ed9t bi\u1ebfn r\u1ed3i sau \u0111\u00f3 gieo h\u1ea1t l\u00ean th\u00e0nh c\u00e2y v\u00e0 cho c\u00e1c c\u00e2y con nhi\u1ec5m t\u00e1c nh\u00e2n g\u00e2y b\u1ec7nh. Sau \u0111\u00f3 ch\u1ecdn l\u1ecdc ra c\u00e1c c\u00e2y c\u00f3 kh\u1ea3 n\u0103ng kh\u00e1ng b\u1ec7nh. Nh\u1eefng c\u00e2y c\u00f3 kh\u1ea3 n\u0103ng kh\u00e1ng b\u1ec7nh cho lai v\u1edbi nhau ho\u1eb7c cho t\u1ef1 th\u1ee5 ph\u1ea5n \u0111\u1ec3 t\u1ea1o ra d\u00f2ng thu\u1ea7n.<\/p>\n

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\n

B\u00e0i 2 (trang 82 SGK Sinh h\u1ecdc 12):\u00a0C\u00f3 hai gi\u1ed1ng l\u00faa, m\u1ed9t gi\u1ed1ng c\u00f3 gen quy \u0111\u1ecbnh kh\u1ea3 n\u0103ng kh\u00e1ng b\u1ec7nh X v\u00e0 m\u1ed9t gi\u1ed1ng c\u00f3 gen quy \u0111\u1ecbnh kh\u1ea3 n\u0103ng kh\u00e1ng b\u1ec7nh Y. B\u1eb1ng c\u00e1ch g\u00e2y \u0111\u1ed9t bi\u1ebfn ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 t\u1ea1o ra gi\u1ed1ng m\u1edbi c\u00f3 hai gen kh\u00e1ng b\u1ec7nh X v\u00e0 Y lu\u00f4n di truy\u1ec1n c\u00f9ng nhau. Gi\u1ea3i th\u00edch ti\u1ebfn h\u00e0nh th\u00ed nghi\u1ec7m. Bi\u1ebft r\u1eb1ng, gen quy \u0111\u1ecbnh b\u1ec7nh X v\u00e0 gen quy \u0111\u1ecbnh b\u1ec7nh Y n\u1eb1m tr\u00ean hai NST t\u01b0\u01a1ng \u0111\u1ed3ng kh\u00e1c nhau.<\/strong><\/p>\n

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

C\u00f3 2 gi\u1ed1ng l\u00faa: m\u1ed9t gi\u1ed1ng c\u00f3 gen quy \u0111\u1ecbnh kh\u1ea3 n\u0103ng kh\u00e1ng b\u1ec7nh X v\u00e0 m\u1ed9t gi\u1ed1ng c\u00f3 gen quy \u0111\u1ecbnh kh\u1ea3 n\u0103ng kh\u00e1ng b\u1ec7nh Y. B\u1eb1ng c\u00e1ch g\u00e2y \u0111\u1ed9t bi\u1ebfn ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 t\u1ea1o ra gi\u1ed1ng m\u1edbi c\u00f3 2 gen kh\u00e1ng b\u1ec7nh X v\u00e0 Y lu\u00f4n di truy\u1ec1n c\u00f9ng nhau.<\/p>\n

C\u00e1ch ti\u1ebfn h\u00e0nh th\u00ed nghi\u1ec7m:<\/p>\n

+ Ng\u01b0\u1eddi ta lai hai gi\u1ed1ng l\u00faa v\u1edbi nhau r\u1ed3i sau \u0111\u00f3 x\u1eed l\u00ed con lai b\u1eb1ng t\u00e1c nh\u00e2n g\u00e2y \u0111\u1ed9t bi\u1ebfn nh\u1eb1m t\u1ea1o ra c\u00e1c \u0111\u1ed9t bi\u1ebfn chuy\u1ec3n \u0111o\u1ea1n nhi\u1ec5m s\u1eafc th\u1ec3 ch\u1ee9a c\u1ea3 hai gen c\u00f3 l\u1ee3i.<\/p>\n

+ T\u1eeb \u0111\u00f3 ch\u1ecdn l\u1ecdc c\u00e2y c\u00f3 ki\u1ec3u h\u00ecnh mong mu\u1ed1n.<\/p>\n

+ T\u1ea1o d\u00f2ng thu\u1ea7n ch\u1ee7ng.<\/p>\n

B\u00e0i 3 (trang 82 SGK Sinh h\u1ecdc 12):\u00a0Tr\u00ecnh b\u00e0y quy tr\u00ecnh t\u1ea1o gi\u1ed1ng c\u00e2y kh\u00e1c lo\u00e0i b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p lai t\u1ebf b\u00e0o x\u00f4ma.<\/strong><\/p>\n

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

Quy tr\u00ecnh t\u1ea1o gi\u1ed1ng c\u00e2y kh\u00e1c lo\u00e0i b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p lai t\u1ebf b\u00e0o x\u00f4ma:<\/p>\n

+ T\u1ea1o ra c\u00e1c t\u1ebf b\u00e0o tr\u1ea7n (nh\u1eefng t\u1ebf b\u00e0o lo\u1ea1i b\u1ecf m\u1ea5t th\u00e0nh t\u1ebf b\u00e0o).<\/p>\n

+ Cho c\u00e1c t\u1ebf b\u00e0o tr\u1ea7n c\u1ea7n lai dung h\u1ee3p v\u1edbi nhau trong m\u00f4i tr\u01b0\u1eddng \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 t\u1ea1o t\u1ebf b\u00e0o lai.<\/p>\n

+ Sau \u0111\u00f3, ng\u01b0\u1eddi ta nu\u00f4i c\u1ea5y t\u1ebf b\u00e0o lai trong m\u00f4i tr\u01b0\u1eddng dinh d\u01b0\u1ee1ng \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 ch\u00fang ph\u00e2n chia v\u00e0 ph\u00e1t tri\u1ec3n th\u00e0nh c\u00e2y.<\/p>\n

B\u00e0i 4 (trang 82 SGK Sinh h\u1ecdc 12):\u00a0Gi\u1ea3i th\u00edch quy tr\u00ecnh nh\u00e2n b\u1ea3n v\u00f4 t\u00ednh \u1edf \u0111\u1ed9ng v\u1eadt v\u00e0 n\u00eau \u00fd ngh\u0129a th\u1ef1c ti\u1ebfn c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y.<\/strong><\/p>\n

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

– Nh\u00e2n b\u1ea3n v\u00f4 t\u00ednh \u1edf \u0111\u1ed9ng v\u1eadt c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh theo quy tr\u00ecnh t\u00f3m t\u1eaft nh\u01b0 sau:<\/p>\n

+ \u0110\u1ea7u ti\u00ean ng\u01b0\u1eddi ta ph\u1ea3i t\u00e1ch nh\u00e2n t\u1ebf b\u00e0o t\u1eeb t\u1ebf b\u00e0o c\u01a1 th\u1ec3 c\u1ee7a \u0111\u1ed9ng v\u1eadt c\u1ea7n nh\u00e2n b\u1ea3n r\u1ed3i cho v\u00e0o m\u1ed9t t\u1ebf b\u00e0o tr\u1ee9ng tr\u01b0\u1edbc \u0111\u00f3 \u0111\u00e3 l\u1ea5y m\u1ea5t nh\u00e2n ho\u1eb7c hu\u1ef7 nh\u00e2n \u0111\u1ec3 t\u1ea1o ra h\u1ee3p t\u1eed ch\u1ee9a nh\u00e2n con v\u1eadt c\u1ea7n nh\u00e2n b\u1ea3n.<\/p>\n

+ Ti\u1ebfp \u0111\u1ebfn, ng\u01b0\u1eddi ta nu\u00f4i h\u1ee3p t\u1eed trong \u1ed1ng nghi\u1ec7m cho ph\u00e1t tri\u1ec3n th\u00e0nh ph\u00f4i sau \u0111\u00f3 c\u1ea5y ph\u00f4i v\u00e0o t\u1eed cung c\u1ee7a con c\u00e1i kh\u00e1c cho mang thai v\u00e0 sinh \u0111\u1ebb b\u00ecnh th\u01b0\u1eddng.<\/p>\n

– Nh\u00e2n b\u1ea3n v\u00f4 t\u00ednh \u1edf \u0111\u1ed9ng v\u1eadt c\u00f3 r\u1ea5t nhi\u1ec1u \u1ee9ng d\u1ee5ng, \u0111\u1eb7c bi\u1ec7t c\u00f3 \u00fd ngh\u0129a trong vi\u1ec7c nh\u00e2n b\u1ea3n \u0111\u1ed9ng v\u1eadt bi\u1ebfn \u0111\u1ed5i gen. V\u00ed d\u1ee5, n\u1ebfu ta c\u00f3 m\u1ed9t con gi\u1ed1ng c\u00f3 nhi\u1ec1u \u0111\u1eb7c \u0111i\u1ec3m qu\u00fd th\u00ec ta c\u00f3 th\u1ec3 t\u1ea1o ra nhi\u1ec1u con v\u1eadt c\u00f3 ki\u1ec3u gen nh\u01b0 v\u1eady. Tuy nhi\u00ean, nh\u00e2n b\u1ea3n v\u00f4 t\u00ednh \u1edf \u0111\u1ed9ng v\u1eadt m\u1edbi \u0111ang trong giai \u0111o\u1ea1n nghi\u00ean c\u1ee9u th\u1eed nghi\u1ec7m \u1edf m\u1ed9t s\u1ed1 \u0111\u1ed9ng v\u1eadt.<\/p>\n

B\u00e0i 5 (trang 82 SGK Sinh h\u1ecdc 12):\u00a0H\u00e3y ch\u1ecdn m\u1ed9t lo\u00e0i c\u00e2y th\u00edch h\u1ee3p trong s\u1ed1 lo\u00e0i c\u00e2y d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ec3 c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng ch\u1ea5t c\u00f4nsixin nh\u1eb1m t\u1ea1o gi\u1ed1ng m\u1edbi \u0111em l\u1ea1i hi\u1ec7u qu\u1ea3 kinh t\u1ebf cao.<\/strong><\/p>\n

a) C\u00e2y l\u00faa \u00a0 \u00a0 \u00a0 \u00a0 b) C\u00e2y \u0111\u1eadu t\u01b0\u01a1ng.<\/p>\n

c) C\u00e2y c\u1ee7 c\u1ea3i \u0111\u01b0\u1eddng \u00a0 \u00a0 d) C\u00e2y ng\u00f4<\/p>\n

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

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

\n
<\/div>\n<\/div>\n

 <\/p>\n<\/div>\n<\/div>\n

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

B\u00e0i 1 (trang 82 SGK Sinh h\u1ecdc 12):\u00a0Gi\u1ea3 s\u1eed c\u00f3 m\u1ed9t gi\u1ed1ng c\u00e2y c\u00e0 chua c\u00f3 gen A quy \u0111\u1ecbnh m\u1ed9t t\u00ednh tr\u1ea1ng kh\u00f4ng mong mu\u1ed1n (d\u1ec5 m\u1eafc b\u1ec7nh X). H\u00e3y n\u00eau quy tr\u00ecnh t\u1ea1o th\u1ec3 \u0111\u1ed9t bi\u1ebfn mang ki\u1ec3u gen aa c\u00f3 kh\u1ea3 n\u0103ng kh\u00e1ng b\u1ec7nh X. L\u1eddi gi\u1ea3i: N\u1ebfu c\u00f3 m\u1ed9t gi\u1ed1ng c\u00e0 […]<\/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 19: T\u1ea1o gi\u1ed1ng b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p g\u00e2y \u0111\u1ed9t bi\u1ebfn v\u00e0 c\u00f4ng ngh\u1ec7 t\u1ebf b\u00e0o<\/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-bai-19-tao-giong-bang-phuong-phap-gay-dot-bien-va-cong-nghe-te-bao\/\" \/>\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 19: T\u1ea1o gi\u1ed1ng b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p g\u00e2y \u0111\u1ed9t bi\u1ebfn v\u00e0 c\u00f4ng ngh\u1ec7 t\u1ebf b\u00e0o\" \/>\n<meta property=\"og:description\" content=\"B\u00e0i 1 (trang 82 SGK Sinh h\u1ecdc 12):\u00a0Gi\u1ea3 s\u1eed c\u00f3 m\u1ed9t gi\u1ed1ng c\u00e2y c\u00e0 chua c\u00f3 gen A quy \u0111\u1ecbnh m\u1ed9t t\u00ednh tr\u1ea1ng kh\u00f4ng mong mu\u1ed1n (d\u1ec5 m\u1eafc b\u1ec7nh X). 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