L\u00fd thuy\u1ebft Sinh h\u1ecdc 10 B\u00e0i 19: Gi\u1ea3m ph\u00e2n<\/h2>\n\n\n\n

I. Kh\u00e1i ni\u1ec7m <\/h3>\n\n\n\n

– Gi\u1ea3m ph\u00e2n g\u1ed3m 2 l\u1ea7n ph\u00e2n b\u00e0o li\u00ean ti\u1ebfp v\u00e0 x\u1ea3y ra \u1edf c\u00e1c c\u01a1 quan sinh\n s\u1ea3n nh\u01b0ng ch\u1ec9 c\u00f3 m\u1ed9t l\u1ea7n nh\u00e2n \u0111\u00f4i c\u1ee7a NST \u1edf k\u1ef3 trung gian tr\u01b0\u1edbc ph\u00e2n \nb\u00e0o I. \n<\/p>\n\n\n\n

– Qua gi\u1ea3m ph\u00e2n t\u1eeb 1 t\u1ebf b\u00e0o ban \u0111\u1ea7u cho ra 4 t\u1ebf b\u00e0o con v\u1edbi s\u1ed1 l\u01b0\u1ee3ng NST gi\u1ea3m \u0111i m\u1ed9t n\u1eeda.\n<\/p>\n\n\n\n

II. Di\u1ec5n bi\u1ebfn <\/h3>\n\n\n\n

Gi\u1ea3m ph\u00e2n I g\u1ed3m: k\u00ec trung gian v\u00e0 4 k\u1ef3 ph\u00e2n b\u00e0o ch\u00ednh th\u1ee9c.<\/p>\n\n\n\n

– AND v\u00e0 NST nh\u00e2n \u0111\u00f4i.\n<\/p>\n\n\n\n

– Trung th\u1ec3 nh\u00e2n \u0111\u00f4i.\n<\/p>\n\n\n\n

– NST nh\u00e2n \u0111\u00f4i th\u00e0nh NST k\u00e9p g\u1ed3m 2 Cr\u00f4matit d\u00ednh v\u1edbi nhau \u1edf t\u00e2m \u0111\u1ed9ng. \n<\/p>\n\n\n\n

2. C\u00e1c k\u00ec ti\u1ebfp theo<\/strong> <\/p>\n\n\n\n

K\u1ef3\t<\/td>	L\u1ea7n GP I<\/td>	\tL\u1ea7n GP II<\/td><\/tr>
\u0110\u1ea7u\t<\/td>	– NST k\u00e9p trong c\u1eb7p t\u01b0\u01a1ng \u0111\u1ed3ng ti\u1ebfp h\u1ee3p v\u00e0 trao \u0111\u1ed5i ch\u00e9o\n\n\n– M\u00e0ng nh\u00e2n v\u00e0 nh\u00e2n con ti\u00eau bi\u1ebfn\t<\/td>	T\u01b0\u01a1ng t\u1ef1 nh\u01b0 GP I nh\u01b0ng NST kh\u00f4ng ti\u1ebfp h\u1ee3p v\u00e0 trao \u0111\u1ed5i ch\u00e9o\n\t\t<\/td><\/tr>
Gi\u1eefa\t<\/td>	– NST co ng\u1eafn c\u1ef1c \u0111\u1ea1i\n\n\n– NSt x\u1ebfp th\u00e0nh 2 h\u00e0ng\t<\/td>	T\u01b0\u01a1ng t\u1ef1 nh\u01b0 GP I nh\u01b0ng NST x\u1ebfp th\u00e0nh 1 h\u00e0ng\n\t\t<\/td><\/tr>
Sau\t<\/td>	– M\u1ed7i NST k\u00e9p trong c\u1eb7p t\u01b0\u01a1ng \u0111\u1ed3ng di chuy\u1ec3n v\u1ec1 m\u1ed7i c\u1ef1c t\u1ebf b\u00e0o\t<\/td>	NST t\u00e1ch nhau \u1edf t\u00e2m \u0111\u1ed9ng ph\u00e2n li \u0111\u1ed3ng \u0111\u1ec1u v\u1ec1 2 c\u1ef1c t\u1ebf b\u00e0o<\/td><\/tr>
Cu\u1ed1i\t<\/td>	– Ph\u00e2n chia t\u1ebf b\u00e0o ch\u1ea5t\n\n\n– NST d\u00e3n xo\u1eafn\n\n\n– Thoi v\u00f4 s\u1eafc bi\u1ebfn m\u1ea5t\n\n\n– M\u00e0ng nh\u00e2n v\u00e0 nh\u00e2n con xu\u1ea5t hi\u1ec7n\n\n\n– M\u1ed7i t\u1ebf b\u00e0o con c\u00f3 n k\u00e9p NST\t<\/td>	T\u01b0\u01a1ng t\u1ef1 nh\u01b0 GP I nh\u01b0ng 4 t\u1ebf b\u00e0o con c\u00f3 n NST \u0111\u01a1n.\n\n\t\t<\/td><\/tr><\/tbody><\/table>\n\n\n\n III. \u00dd ngh\u0129a c\u1ee7a gi\u1ea3m ph\u00e2n<\/h3>\n\n\n\n – S\u1ef1 ph\u00e2n ly \u0111\u1ed9c l\u1eadp c\u1ee7a c\u00e1c NST v\u00e0 trao \u0111\u1ed5i \u0111o\u1ea1n t\u1ea1o n\u00ean nhi\u1ec1u lo\u1ea1i giao t\u1eed.\n<\/p>\n\n\n\n – Qua th\u1ee5 tinh t\u1ea1o ra nhi\u1ec1u t\u1ed5 h\u1ee3p gen m\u1edbi g\u00e2y n\u00ean c\u00e1c bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p \u2192 Sinh gi\u1edbi \u0111a d\u1ea1ng v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng th\u00edch nghi cao.\n<\/p>\n\n\n\n – Nguy\u00ean ph\u00e2n, gi\u1ea3m ph\u00e2n v\u00e0 th\u1ee5 tinh g\u00f3p ph\u1ea7n duy tr\u00ec b\u1ed9 NST \u0111\u1eb7c tr\u01b0ng cho lo\u00e0i.\n<\/p>\n","protected":false},"excerpt":{"rendered":" L\u00fd thuy\u1ebft Sinh h\u1ecdc 10 B\u00e0i 19: Gi\u1ea3m ph\u00e2n I. Kh\u00e1i ni\u1ec7m – Gi\u1ea3m ph\u00e2n g\u1ed3m 2 l\u1ea7n ph\u00e2n b\u00e0o li\u00ean ti\u1ebfp v\u00e0 x\u1ea3y ra \u1edf c\u00e1c c\u01a1 quan sinh s\u1ea3n nh\u01b0ng ch\u1ec9 c\u00f3 m\u1ed9t l\u1ea7n nh\u00e2n \u0111\u00f4i c\u1ee7a NST \u1edf k\u1ef3 trung gian tr\u01b0\u1edbc ph\u00e2n b\u00e0o I. – Qua gi\u1ea3m ph\u00e2n t\u1eeb 1 t\u1ebf […]<\/p>\n","protected":false},"author":12,"featured_media":44044,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[1644],"tags":[],"yoast_head":"\n