L\u00fd thuy\u1ebft Sinh h\u1ecdc 10 B\u00e0i 18: Chu k\u00ec t\u1ebf b\u00e0o v\u00e0 qu\u00e1 tr\u00ecnh nguy\u00ean ph\u00e2n<\/h2>\n\n\n\n

I. Chu k\u00ec t\u1ebf b\u00e0o<\/h3>\n\n\n\n

1. Kh\u00e1i ni\u1ec7m<\/strong> <\/p>\n\n\n\n

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

– Chu k\u00ec t\u1ebf b\u00e0o l\u00e0 kho\u1ea3ng th\u1eddi gian gi\u1eefa 2 l\u1ea7n ph\u00e2n b\u00e0o\n<\/p>\n\n\n\n

– Chu k\u00ec t\u1ebf b\u00e0o bao g\u1ed3m:\n<\/p>\n\n\n\n

\u2022 K\u00ec trung gian (chi\u1ebfm ph\u1ea7n l\u1edbn th\u1eddi gian)\n<\/p>\n\n\n\n

– Pha G1: T\u1ed5ng h\u1ee3p c\u00e1c ch\u1ea5t c\u1ea7n cho s\u1ef1 sinh tr\u01b0\u1edfng\n<\/p>\n\n\n\n

– Pha S: Pha NST nh\u00e2n \u0111\u00f4i\n<\/p>\n\n\n\n

– Pha G2: T\u1ed5ng h\u1ee3p t\u1ea5t c\u1ea3 nh\u1eefng g\u00ec c\u00f2n l\u1ea1i c\u1ea7n cho qu\u00e1 tr\u00ecnh ph\u00e2n b\u00e0o.\n<\/p>\n\n\n\n

\u2022 Qu\u00e1 tr\u00ecnh nguy\u00ean ph\u00e2n\n<\/p>\n\n\n\n

– K\u1ef3 \u0111\u1ea7u\n<\/p>\n\n\n\n

– K\u1ef3 gi\u1eefa\n<\/p>\n\n\n\n

– K\u1ef3 sau\n<\/p>\n\n\n\n

– K\u1ef3 cu\u1ed1i\n<\/p>\n\n\n\n

2. \u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a chu k\u00ec t\u1ebf b\u00e0o<\/strong> <\/p>\n\n\n\n

– Chu k\u00ec t\u1ebf b\u00e0o \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n r\u1ea5t ch\u1eb7t ch\u1ebd nh\u1eb1m \u0111\u1ea3m b\u1ea3o s\u1ef1 sinh tr\u01b0\u1edfng v\u00e0 ph\u00e1t tri\u1ec3n b\u00ecnh th\u01b0\u1eddng c\u1ee7a c\u01a1 th\u1ec3\n<\/p>\n\n\n\n

– Tr\u00ean c\u00f9ng m\u1ed9t c\u01a1 th\u1ec3, t\u1ed1c \u0111\u1ed9 ph\u00e2n chia t\u1ebf b\u00e0o \u1edf c\u00e1c b\u1ed9 ph\u1eadn kh\u00e1c nhau l\u00e0 kh\u00e1c nhau.\n<\/p>\n\n\n\n

– C\u00e1c t\u1ebf b\u00e0o trong c\u01a1 th\u1ec3 \u0111a b\u00e0o ch\u1ec9 ph\u00e2n chia khi c\u00f3 t\u00edn hi\u1ec7u \u2192 n\u1ebfu t\u00edn hi\u1ec7u b\u1ecb l\u1ed7i \u2192 t\u1ebf b\u00e0o t\u0103ng sinh li\u00ean t\u1ee5c \u2192 g\u00e2y ung th\u01b0.\n<\/p>\n\n\n\n

II. Qu\u00e1 tr\u00ecnh nguy\u00ean ph\u00e2n<\/h3>\n\n\n\n

1. Kh\u00e1i ni\u1ec7m<\/strong> <\/p>\n\n\n\n

Nguy\u00ean ph\u00e2n l\u00e0 h\u00ecnh th\u1ee9c sinh s\u1ea3n c\u1ee7a t\u1ebf b\u00e0o m\u00e0 trong \u0111\u00f3 v\u1eadt ch\u1ea5t di truy\u1ec1n \u0111\u01b0\u1ee3c chia \u0111\u1ec1u cho c\u00e1c t\u1ebf b\u00e0o con.<\/p>\n\n\n\n

2. Di\u1ec5n bi\u1ebfn c\u1ee7a qu\u00e1 tr\u00ecnh nguy\u00ean ph\u00e2n<\/strong> <\/p>\n\n\n\n

K\u00ec<\/td>	\tDi\u1ec5n bi\u1ebfn<\/td><\/tr>
K\u00ec \u0111\u1ea7u<\/td>	– NST b\u1eaft \u0111\u1ea7u \u0111\u00f3ng xo\u1eafn\n\n\n– Thoi ph\u00e2n b\u00e0o xu\u1ea5t hi\u1ec7n\n\n\n– M\u00e0ng nh\u00e2n v\u00e0 nh\u00e2n con d\u1ea7n bi\u1ebfn m\u1ea5t.\t\n\t\t<\/td><\/tr>
K\u00ec gi\u1eefa<\/td>	\t– NST \u0111\u00f3ng xo\u1eafn c\u1ef1c \u0111\u1ea1i\n\n\n– NST x\u1ebfp th\u00e0nh 1 h\u00e0ng \u1edf m\u1eb7t ph\u1eb3ng x\u00edch \u0111\u1ea1o c\u1ee7a thoi ph\u00e2n b\u00e0o.\n\n\n– M\u00e0ng nh\u00e2n v\u00e0 nh\u00e2n con bi\u1ebfn m\u1ea5t ho\u00e0n to\u00e0n.\n\t\t<\/td><\/tr>
K\u00ec sau\t<\/td>	T\u1eebng NST t\u00e1ch nhau \u1edf t\u00e2m \u0111\u1ed9ng ph\u00e2n li v\u1ec1 2 c\u1ef1c c\u1ee7a t\u1ebf b\u00e0o<\/td><\/tr>
K\u00ec cu\u1ed1i<\/td>	\t– NST \u0111\u01a1n du\u1ed7i xo\u1eafn th\u00e0nh d\u1ea1ng s\u1ee3i m\u1ea3nh\n\n– T\u1ebf b\u00e0o ch\u1ea5t ph\u00e2n chia, m\u00e0ng nh\u00e2n v\u00e0 nh\u00e2n con d\u1ea7n \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh tr\u1edf l\u1ea1i.\n\t\t<\/td><\/tr><\/tbody><\/table>\n\n\n\n K\u1ebft qu\u1ea3: T\u1eeb 1 t\u1ebf b\u00e0o m\u1eb9 ban \u0111\u1ea7u t\u1ea1o ra 2 t\u1ebf b\u00e0o con gi\u1ed1ng nhau v\u00e0 gi\u1ed1ng h\u1ec7t m\u1eb9.<\/p>\n\n\n\n III. \u00dd ngh\u0129a c\u1ee7a nguy\u00ean ph\u00e2n<\/h3>\n\n\n\n – L\u00e0 h\u00ecnh th\u1ee9c sinh s\u1ea3n c\u1ee7a t\u1ebf b\u00e0o\n<\/p>\n\n\n\n – Gi\u00fap c\u01a1 th\u1ec3 sinh tr\u01b0\u1edfng, ph\u00e1t tri\u1ec3n, t\u00e1i sinh m\u00f4, c\u01a1 quan t\u1ed5n th\u01b0\u01a1ng, l\u00e0 c\u01a1 s\u1edf c\u1ee7a sinh s\u1ea3n v\u00f4 t\u00ednh.\n<\/p>\n\n\n\n – \u1ee8ng d\u1ee5ng trong nu\u00f4i c\u1ea5y m\u00f4.\n<\/p>\n","protected":false},"excerpt":{"rendered":" L\u00fd thuy\u1ebft Sinh h\u1ecdc 10 B\u00e0i 18: Chu k\u00ec t\u1ebf b\u00e0o v\u00e0 qu\u00e1 tr\u00ecnh nguy\u00ean ph\u00e2n I. Chu k\u00ec t\u1ebf b\u00e0o 1. Kh\u00e1i ni\u1ec7m – Chu k\u00ec t\u1ebf b\u00e0o l\u00e0 kho\u1ea3ng th\u1eddi gian gi\u1eefa 2 l\u1ea7n ph\u00e2n b\u00e0o – Chu k\u00ec t\u1ebf b\u00e0o bao g\u1ed3m: \u2022 K\u00ec trung gian (chi\u1ebfm ph\u1ea7n l\u1edbn th\u1eddi gian) – […]<\/p>\n","protected":false},"author":12,"featured_media":44041,"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