Khi m\u1ed5 l\u01b0\u01a1n, ta th\u01b0\u1eddng ph\u00e1t hi\u1ec7n nh\u1eefng con l\u01b0\u01a1n to v\u00e0 r\u00e1p \u0111\u1ec1u kh\u00f4ng c\u00f3 tr\u1ee9ng m\u00e0 nh\u1eefng con nh\u1ecf, m\u1ecbn l\u1ea1i c\u00f3 tr\u1ee9ng, v\u1eady nguy\u00ean nh\u00e2n do \u0111\u00e2u?<\/p>\n\n\n\n
B\u1edfi v\u00ec s\u1ef1 ph\u00e2n bi\u1ec7t \u0111\u1ef1c, c\u00e1i c\u1ee7a l\u01b0\u01a1n v\u00e0 c\u1ee7a nhi\u1ec1u lo\u00e0i c\u00e1 kh\u00e1c kh\u00f4ng gi\u1ed1ng nhau. \u0110a s\u1ed1 trong c\u01a1 th\u1ec3 c\u1ee7a c\u00e1c lo\u00e0i \u0111\u1ec1u c\u00f3 t\u00fai tr\u1ee9ng (\u1edf con c\u00e1i) v\u00e0 t\u00fai tinh tr\u00f9ng (\u1edf con \u0111\u1ef1c). T\u1eeb nh\u1ecf \u0111\u1ebfn l\u1edbn \u0111\u1ec1u nh\u01b0 v\u1eady v\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 gi\u1ed1ng n\u00e0y mang t\u00ednh l\u00e2u d\u00e0i. Nh\u01b0ng l\u01b0\u01a1n th\u00ec kh\u00f4ng gi\u1ed1ng th\u1ebf, T\u1eeb trong bu\u1ed3ng tr\u1ee9ng sinh ra l\u01b0\u01a1n con, trong t\u1ea5t c\u1ea3 c\u00e1c c\u00e1 th\u1ec3 c\u1ee7a l\u01b0\u01a1n \u0111\u1ec1u c\u00f3 tr\u1ee9ng v\u00e0 c\u00f3 th\u1ec3 n\u00f3i t\u1ea5t c\u1ea3 ch\u00fang \u0111\u1ec1u l\u00e0 l\u01b0\u01a1n c\u00e1i.<\/p>\n\n\n\n
Nh\u01b0ng \u0111\u1ee3i \u0111\u1ebfn khi nh\u1eefng l\u01b0\u01a1n con tr\u01b0\u1edfng th\u00e0nh, sau khi \u0111\u1ebb tr\u1ee9ng, n\u1ed9i b\u1ed9 t\u00fai tr\u1ee9ng c\u00f3 s\u1ef1 thay \u0111\u1ed5i d\u1ea7n d\u1ea7n. Nh\u1eefng t\u1ed5 ch\u1ee9c s\u1ea3n xu\u1ea5t ra t\u1ebf b\u00e0o tr\u1ee9ng tr\u01b0\u1edbc kia l\u1ea1i chuy\u1ec3n ho\u00e1 th\u00e0nh t\u00fai tinh \u0111\u1ec3 s\u1ea3n xu\u1ea5t tinh tr\u00f9ng.<\/p>\n\n\n\n
Nh\u1eefng con l\u01b0\u01a1n c\u00e1i tr\u01b0\u1edbc kia gi\u1edd \u0111\u00e3 tr\u1edf th\u00e0nh nh\u1eefng con l\u01b0\u01a1n \u0111\u1ef1c c\u00f3 th\u1ec3 ph\u00f3ng tinh tr\u00f9ng. Trong khoa h\u1ecdc ng\u01b0\u1eddi ta g\u1ecdi l\u00e0 “chuy\u1ec3n ng\u01b0\u1ee3c gi\u1edbi t\u00ednh”. T\u00ecnh tr\u1ea1ng chuy\u1ec3n ng\u01b0\u1ee3c gi\u1edbi t\u00ednh kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ef1 bi\u1ebfn d\u1ecb c\u1ee7a c\u00e1 th\u1ec3 m\u00e0 l\u00e0 c\u1ea3 m\u1ed9t quy lu\u1eadt ph\u00e1t tri\u1ec3n n\u00f2i gi\u1ed1ng, l\u00e0 \u0111\u1eb7c t\u00ednh c\u1ee7a lo\u00e0i c\u00e1 n\u00e0y. Do nh\u1eefng nguy\u00ean nh\u00e2n tr\u00ean m\u00e0 ng\u01b0\u1eddi ta th\u01b0\u1eddng th\u1ea5y nh\u1eefng con to, th\u00f4 l\u00e0 l\u01b0\u01a1n \u0111\u1ef1c. C\u00f3 th\u1ec3 c\u00f3 ng\u01b0\u1eddi s\u1ebd h\u1ecfi: L\u01b0\u01a1n c\u00e1i tr\u1edf th\u00e0nh l\u01b0\u01a1n \u0111\u1ef1c, v\u1eady nh\u1eefng th\u1ebf h\u1ec7 sau c\u1ee7a ch\u00fang \u0111\u01b0\u1ee3c sinh ra nh\u01b0 th\u1ebf n\u00e0o? Th\u00ec ra nh\u1eefng con l\u01b0\u01a1n con sinh ra t\u1eeb trong t\u00fai tr\u1ee9ng (l\u00e0 con c\u00e1i), sau khi tr\u01b0\u1edfng th\u00e0nh \u0111\u00e3 ti\u1ebfn h\u00e0nh vi\u1ec7c sinh s\u1ea3n \u0111\u1ebb tr\u1ee9ng \u0111\u1ea7u ti\u00ean trong \u0111\u1eddi.<\/p>\n\n\n\n
Sau khi \u0111\u1ebb tr\u1ee9ng th\u00ec l\u01b0\u01a1n s\u1ebd thay \u0111\u1ed5i gi\u1edbi t\u00ednh, d\u01b0\u1edbi m\u1ed9t n\u0103m tr\u1edf th\u00e0nh l\u01b0\u01a1n gi\u1ed1ng \u0111\u1ef1c v\u00e0 ti\u1ebfn h\u00e0nh giao ph\u1ed1i v\u1edbi l\u01b0\u01a1n c\u00e1i c\u1ee7a th\u1ebf h\u1ec7 sau \u0111\u1ec3 duy tr\u00ec n\u00f2i gi\u1ed1ng. M\u1ed7i n\u0103m \u0111\u1ec1u c\u00f3 m\u1ed9t lo\u1ea1t l\u01b0\u01a1n c\u00e1i \u0111\u1ebb tr\u1ee9ng v\u00e0 m\u1ed7i n\u0103m \u0111\u1ec1u c\u00f3 m\u1ed9t lo\u1ea1t l\u01b0\u01a1n c\u00e1i ra \u0111\u1eddi. L\u00e0m nh\u01b0 v\u1eady m\u1edbi c\u00f3 th\u1ec3 b\u1ea3o t\u1ed3n \u0111\u01b0\u1ee3c n\u00f2i gi\u1ed1ng nh\u00e0 l\u01b0\u01a1n.<\/p>\n\n\n\n
Ki\u1ec3u thay \u0111\u1ed5i gi\u1edbi t\u00ednh c\u1ee7a l\u01b0\u01a1n r\u1ea5t \u00edt g\u1eb7p trong c\u00e1c lo\u00e0i \u0111\u1ed9ng v\u1eadt kh\u00e1c, m\u1eb7c d\u00f9 trong m\u1ed9t s\u1ed1 lo\u00e0i \u0111\u1ed9ng v\u1eadt c\u0169ng c\u00f3 s\u1ef1 thay \u0111\u1ed5i v\u1ec1 gi\u1edbi t\u00ednh nh\u01b0ng \u0111\u00f3 ch\u1ec9 l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng c\u00e1 th\u1ec3.<\/p>\n\n\n\n
Trong c\u00e1c lo\u00e0i c\u00e1, ch\u1ec9 ri\u00eang l\u01b0\u01a1n c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng chuy\u1ec3n \u0111\u1ed5i gi\u1edbi t\u00ednh. C\u00f2n m\u1ed9t s\u1ed1 lo\u00e0i c\u00e1 t\u1ed3n t\u1ea1i hi\u1ec7n t\u01b0\u1ee3ng \u0111\u1ed3ng th\u1ec3 \u0111\u1ef1c, c\u00e1i, v\u00ed d\u1ee5 nh\u01b0 c\u00e1 b\u01b0\u1edbm. Ch\u00fang c\u00f3 hai tuy\u1ebfn sinh s\u1ea3n, kh\u1ea3 n\u0103ng m\u1ed9t b\u00ean l\u00e0 \u0111\u1ef1c, b\u00ean kia l\u00e0 c\u00e1i ho\u1eb7c m\u1ed9t b\u00ean ho\u1eb7c hai b\u00ean \u0111\u1ec1u c\u00f3 tuy\u1ebfn sinh s\u1ea3n \u0111\u1ef1c, c\u00e1i.<\/p>\n\n\n\n
Nh\u1eefng lo\u00e0i c\u00e1 \u0111\u1ed3ng th\u1ec3 \u0111\u1ef1c, c\u00e1i n\u00e0y c\u00f2n t\u1ef1 m\u00ecnh th\u1ee5 tinh tr\u1ee9ng c\u1ee7a m\u00ecnh \u0111\u1ebb ra k\u1ebft h\u1ee3p v\u1edbi tinh tr\u00f9ng c\u1ee7a ch\u00ednh n\u00f3 ph\u00f3ng ra \u0111\u1ec3 ph\u00e1t tri\u1ec3n th\u00e0nh th\u1ebf h\u1ec7 sau. Gi\u1ed1ng nh\u01b0 c\u00e1 thu c\u0169ng c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng \u0111\u1ed3ng th\u1ec3 \u0111\u1ef1c, c\u00e1i, trong t\u00fai tinh c\u1ee7a c\u00e1 \u0111\u1ef1c c\u00f3 l\u00fac c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y s\u1ef1 c\u00f3 m\u1eb7t c\u1ee7a tr\u1ee9ng.<\/p>\n","protected":false},"excerpt":{"rendered":"
Khi m\u1ed5 l\u01b0\u01a1n, ta th\u01b0\u1eddng ph\u00e1t hi\u1ec7n nh\u1eefng con l\u01b0\u01a1n to v\u00e0 r\u00e1p \u0111\u1ec1u kh\u00f4ng c\u00f3 tr\u1ee9ng m\u00e0 nh\u1eefng con nh\u1ecf, m\u1ecbn l\u1ea1i c\u00f3 tr\u1ee9ng, v\u1eady nguy\u00ean nh\u00e2n do \u0111\u00e2u? B\u1edfi v\u00ec s\u1ef1 ph\u00e2n bi\u1ec7t \u0111\u1ef1c, c\u00e1i c\u1ee7a l\u01b0\u01a1n v\u00e0 c\u1ee7a nhi\u1ec1u lo\u00e0i c\u00e1 kh\u00e1c kh\u00f4ng gi\u1ed1ng nhau. \u0110a s\u1ed1 trong c\u01a1 th\u1ec3 c\u1ee7a c\u00e1c […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15,10],"tags":[],"class_list":["post-8417","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-sinh-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8417","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=8417"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8417\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=8417"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=8417"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=8417"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}