Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn<\/p>\n\n\n\n
Bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p l\u00e0 g\u00ec? L\u00e0 m\u1ed9t h\u00ecnh th\u1ee9c \u0111\u01b0\u1ee3c \u01b0u ti\u00ean l\u1ef1a ch\u1ecdn trong khoa h\u1ecdc ch\u1ecdn gi\u1ed1ng; gi\u1eef l\u1ea1i gen t\u1ed1t v\u00e0 lo\u1ea1i b\u1ecf c\u00e1c gen x\u1ea5u. \u0110\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 kh\u00e1i ni\u1ec7m, \u0111\u1eb7c \u0111i\u1ec3m, \u00fd ngh\u0129a c\u1ee7a bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p, qu\u00fd b\u1ea1n \u0111\u1ecdc \u0111\u1eebng b\u1ecf l\u1ee1 n\u1ed9i dung c\u00f3 trong b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y.<\/p>\n\n\n\n
L\u1ecbch s\u1eed h\u1ecdc thuy\u1ebft bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p<\/p>\n\n\n\n
Jean-Baptiste Lamarck nh\u00e0 t\u1ef1 nhi\u00ean h\u1ecdc ng\u01b0\u1eddi Ph\u00e1p, l\u00e0 ng\u01b0\u1eddi ch\u1ed1ng l\u1ea1i thuy\u1ebft sinh v\u1eadt b\u1ea5t bi\u1ebfn. Theo h\u1ecdc thuy\u1ebft c\u1ee7a \u00f4ng, c\u00e1c \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng b\u00ean ngo\u00e0i s\u1ebd \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp l\u00ean c\u01a1 th\u1ec3 sinh v\u1eadt, ki\u1ebfn t\u1ea1o ra c\u00e1c bi\u1ebfn d\u1ecb v\u00e0 c\u00e1c bi\u1ebfn d\u1ecb n\u00e0y c\u00f3 th\u1ec3 di truy\u1ec1n cho c\u00e1c th\u1ebf h\u1ec7 \u0111\u1eddi sau.<\/p>\n\n\n\n
Charles Darwin (ng\u01b0\u1eddi Anh) \u0111\u00e3 \u0111\u1eb7t n\u1ec1n m\u00f3ng cho thuy\u1ebft ti\u1ebfn h\u00f3a. \u00d4ng \u0111\u00e3 nghi\u00ean c\u1ee9u c\u00e1c bi\u1ebfn d\u1ecb tr\u00ean nhi\u1ec1u lo\u00e0i v\u00e0 \u0111\u01b0a ra \u0111\u00f3 l\u00e0: bi\u1ebfn d\u1ecb x\u00e1c \u0111\u1ecbnh v\u00e0 bi\u1ebfn d\u1ecb kh\u00f4ng x\u00e1c \u0111\u1ecbnh.<\/p>\n\n\n\n
Qu\u00e1 tr\u00ecnh ph\u00e1t sinh bi\u1ebfn d\u1ecb x\u1ea3y ra khi c\u00f3 c\u00e1c t\u00e1c \u0111\u1ed9ng c\u1ee7a \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng v\u00e0 t\u00e1c \u0111\u1ed9ng t\u1eeb b\u00ean trong c\u01a1 th\u1ec3. V\u1edbi b\u1ea3n ch\u1ea5t c\u01a1 th\u1ec3 l\u00e0 quan tr\u1ecdng nh\u1ea5t, t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn s\u1ef1 bi\u1ebfn d\u1ecb, trong khi \u0111\u00f3 \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng gi\u1eef vai tr\u00f2 k\u00edch th\u00edch s\u1ef1 xu\u1ea5t hi\u1ec7n c\u1ee7a c\u00e1c bi\u1ebfn d\u1ecb.<\/p>\n\n\n\n
Bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p l\u00e0 g\u00ec?<\/p>\n\n\n\n
Bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p l\u00e0 h\u00ecnh th\u1ee9c t\u1ed5 h\u1ee3p l\u1ea1i c\u00e1c t\u00ednh tr\u1ea1ng c\u1ee7a b\u1ed1 m\u1eb9 trong qu\u00e1 tr\u00ecnh sinh s\u1ea3n. Trong qu\u00e1 tr\u00ecnh ph\u00e1t sinh giao t\u1eed \u0111\u00e3 c\u00f3 s\u1ef1 ph\u00e2n li \u0111\u1ed9c l\u1eadp c\u1ee7a nhi\u1ec1u nh\u00e2n t\u1ed1 di truy\u1ec1n. Ch\u00ednh t\u1eeb s\u1ef1 t\u1ed5 h\u1ee3p t\u1ef1 do \u0111\u00f3 \u0111\u00e3 g\u00e2y ra s\u1ef1 bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p trong qu\u00e1 tr\u00ecnh th\u1ee5 tinh.<\/p>\n\n\n\n
X\u00e9t theo ngu\u1ed3n g\u1ed1c, bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi qu\u00e1 tr\u00ecnh giao ph\u1ed1i gi\u1eefa 2 c\u00e1 th\u1ec3. Nh\u01b0ng n\u1ebfu x\u00e9t theo c\u01a1 ch\u1ebf th\u00ec bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p l\u1ea1i ph\u00e1t sinh t\u1eeb c\u01a1 ch\u1ebf ph\u00e2n li \u0111\u1ed9c l\u1eadp khi t\u1ed5 h\u1ee3p \u0111\u00f3 \u0111ang trong qu\u00e1 tr\u00ecnh ph\u00e1t sinh giao t\u1eed.<\/p>\n\n\n\n
T\u1eeb s\u1ef1 k\u1ebft h\u1ee3p ng\u1eabu nhi\u00ean trong qu\u00e1 tr\u00ecnh th\u1ee5 tinh c\u1ee7a 2 giao t\u1eed \u0111\u1ef1c v\u00e0 c\u00e1i. Bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p kh\u00f4ng c\u00f3 g\u00ec \u0111\u1eb7c s\u1eafc, lu\u00f4n \u1edf m\u1ee9c \u0111\u1ed9 nh\u1ecf v\u00e0 r\u1ea5t \u0111a d\u1ea1ng. Nh\u1edd \u0111\u00f3 \u0111\u00e3 t\u1ea1o n\u00ean ngu\u1ed3n bi\u1ebfn d\u1ecb th\u01b0\u1eddng xuy\u00ean v\u00e0 v\u00f4 t\u1eadn cho qu\u00e1 tr\u00ecnh ch\u1ecdn l\u1ecdc trong t\u1ef1 nhi\u00ean.<\/p>\n\n\n\n
Kh\u00e1i ni\u1ec7m bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p \u0111\u01b0\u1ee3c hi\u1ec3u m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n nh\u1ea5t \u0111\u00f3 l\u00e0 h\u00ecnh th\u1ee9c t\u1ed5 h\u1ee3p l\u1ea1i c\u00e1c t\u00ednh tr\u1ea1ng c\u1ee7a cha m\u1eb9 trong qu\u00e1 tr\u00ecnh sinh s\u1ea3n. S\u1ef1 ph\u00e2n ly c\u1ee7a c\u00e1c nh\u00e2n t\u1ed1 di truy\u1ec1n trong qu\u00e1 tr\u00ecnh ph\u00e1t sinh giao t\u1eed, s\u1ef1 t\u1ed5 h\u1ee3p t\u1ef1 do trong qu\u00e1 tr\u00ecnh th\u1ee5 tinh l\u00e0 c\u01a1 s\u1edf t\u1ea1o n\u00ean c\u00e1c bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p.<\/p>\n\n\n\n
V\u00ed d\u1ee5 c\u1ee7a bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p<\/p>\n\n\n\n
P: Aa x Aa<\/p>\n\n\n\n
Gp: A, a A, a<\/p>\n\n\n\n
F1: 1AA : 2Aa : 1aa<\/p>\n\n\n\n
Nguy\u00ean nh\u00e2n t\u1ea1o ra bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p<\/p>\n\n\n\n
C\u00f3 r\u1ea5t nhi\u1ec1u nguy\u00ean nh\u00e2n t\u1ea1o ra bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p, trong \u0111\u00f3 c\u00f3 3 nguy\u00ean nh\u00e2n ch\u00ednh, \u0111\u00f3 l\u00e0:<\/p>\n\n\n\n
Bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p do ho\u00e1n v\u1ecb gen<\/p>\n\n\n\n
Bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p t\u1ea1o ra b\u1edfi qu\u00e1 tr\u00ecnh ph\u00e1t sinh giao t\u1eed<\/p>\n\n\n\n
Bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p trong qu\u00e1 tr\u00ecnh th\u1ee5 tinh<\/p>\n\n\n\n
Bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p \u0111\u01b0\u1ee3c t\u1ea1o ra t\u1eeb ph\u01b0\u01a1ng ph\u00e1p n\u00e0o?<\/p>\n\n\n\n
Ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ec3 t\u1ea1o ra bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p \u0111\u00f3 ch\u00ednh l\u00e0 lai h\u1eefu t\u00ednh hay c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 lai gi\u1ed1ng. C\u00e1c t\u00e1c nh\u00e2n v\u1eadt l\u00fd, h\u00f3a h\u1ecdc g\u00e2y \u0111\u1ed9t bi\u1ebfn kh\u00f4ng th\u1ec3 t\u1ea1o \u0111\u01b0\u1ee3c ngu\u1ed3n bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p. Thay \u0111\u1ed5i m\u00f4i tr\u01b0\u1eddng s\u1ed1ng sinh v\u1eadt s\u1ebd thay \u0111\u1ed5i \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 th\u01b0\u1eddng bi\u1ebfn.<\/p>\n\n\n\n
Bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m g\u00ec?<\/p>\n\n\n\n
Bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p c\u00f3 c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m sau:<\/p>\n\n\n\n
Nguy\u00ean nh\u00e2n: \u0110\u01b0\u1ee3c ph\u00e1t sinh trong qu\u00e1 tr\u00ecnh giao ph\u1ed1i<\/p>\n\n\n\n
C\u01a1 ch\u1ebf ph\u00e1t sinh: Hi\u1ec7n t\u01b0\u1ee3ng x\u1ea3y ra do s\u1ef1 ph\u00e2n li \u0111\u1ed9c l\u1eadp v\u00e0 s\u1ef1 t\u1ed5 h\u1ee3p c\u1ee7a c\u00e1c nhi\u1ec5m s\u1eafc th\u1ec3 \u1edf trong qu\u00e1 tr\u00ecnh th\u1ee5 tinh, ho\u00e1n v\u1ecb gen<\/p>\n\n\n\n
Bi\u1ec3u hi\u1ec7n: C\u00f3 s\u1ef1 s\u1eafp x\u1ebfp t\u1eeb c\u00e1c t\u00ednh tr\u1ea1ng c\u1ee7a b\u1ed1 m\u1eb9, t\u1ed5 ti\u00ean ho\u1eb7c l\u00e0 xu\u1ea5t hi\u1ec7n t\u00ednh tr\u1ea1ng m\u1edbi.<\/p>\n\n\n\n
Bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p mang \u0111\u1ebfn ngu\u1ed3n bi\u1ebfn d\u1ecb trong c\u00e1c lo\u00e0i sinh v\u1eadt, l\u00e0m t\u0103ng s\u1ef1 \u0111a d\u1ea1ng sinh h\u1ecdc, l\u00e0 nguy\u00ean li\u1ec7u v\u00f4 c\u00f9ng c\u1ea7n thi\u1ebft khi ch\u1ecdn gi\u1ed1ng v\u00e0 ti\u1ebfn h\u00f3a.<\/p>\n\n\n\n
\u00dd ngh\u0129a c\u1ee7a bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p<\/p>\n\n\n\n
Bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p c\u00f3 2 \u00fd ngh\u0129a \u0111\u00f3 l\u00e0:<\/p>\n\n\n\n
\u00dd ngh\u0129a trong vi\u1ec7c ch\u1ecdn gi\u1ed1ng<\/p>\n\n\n\n
Bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p l\u00e0m t\u0103ng t\u00ednh \u0111a d\u1ea1ng c\u1ee7a \u0111\u1ed9ng v\u1eadt v\u00e0 th\u1ef1c v\u1eadt; t\u1ea1o \u0111i\u1ec1u ki\u1ec7n gi\u00fap \u00edch cho qu\u00e1 tr\u00ecnh ch\u1ecdn gi\u1ed1ng. Nh\u1edd \u0111\u00f3, s\u1ebd gi\u00fap t\u0103ng n\u0103ng su\u1ea5t c\u1ee7a v\u1eadt nu\u00f4i, c\u00e2y tr\u1ed3ng, duy tr\u00ec n\u00f2i gi\u1ed1ng. C\u00e2y s\u1ebd ph\u00e1t tri\u1ec3n v\u01b0\u1ee3t tr\u1ed9i, t\u0103ng n\u0103ng su\u1ea5t c\u00f2n \u0111\u1ed1i v\u1edbi \u0111\u1ed9ng v\u1eadt th\u00ec s\u1ebd t\u0103ng kh\u1ea3 n\u0103ng sinh s\u1ea3n.<\/p>\n\n\n\n
\u00dd ngh\u0129a trong vi\u1ec7c ti\u1ebfn h\u00f3a<\/p>\n\n\n\n
Bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p s\u1ebd gi\u00fap cho s\u1ef1 \u0111a d\u1ea1ng c\u1ee7a m\u1ed7i lo\u00e0i, t\u0103ng kh\u1ea3 n\u0103ng ph\u00e2n b\u1ed1 \u1edf nhi\u1ec1u m\u00f4i tr\u01b0\u1eddng s\u1ed1ng gi\u00fap ch\u00fang th\u00edch nghi t\u1ed1t, kh\u1ea3 n\u0103ng \u0111\u1ea5u tranh sinh t\u1ed3n \u0111\u01b0\u1ee3c n\u00e2ng l\u00ean.<\/p>\n\n\n\n
=> Bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p gi\u1eef m\u1ed9t vai tr\u00f2 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi qu\u00e1 tr\u00ecnh ch\u1ecdn gi\u1ed1ng v\u00e0 ti\u1ebfn h\u00f3a. Sinh v\u1eadt c\u00f3 kh\u1ea3 n\u0103ng sinh t\u1ed1t v\u00e0 ph\u00e1t tri\u1ec3n t\u1ed1t, n\u0103ng su\u1ea5t ng\u00e0y c\u00e0ng cao.<\/p>\n\n\n\n
Bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p c\u00f3 vai tr\u00f2 g\u00ec?<\/p>\n\n\n\n
Trong qu\u00e1 tr\u00ecnh ch\u1ecdn gi\u1ed1ng, ng\u01b0\u1eddi ta lu\u00f4n gi\u1eef l\u1ea1i c\u00e1c ki\u1ec3u gen t\u1ed1t, lo\u1ea1i b\u1ecf gen x\u1ea5u \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u \u0111a d\u1ea1ng. \u0110i\u1ec1u n\u00e0y gi\u00fap \u00edch cho ngu\u1ed3n bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p lu\u00f4n phong ph\u00fa v\u00e0 \u0111a d\u1ea1ng.<\/p>\n\n\n\n
Bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p \u0111\u01b0\u1ee3c coi l\u00e0 ngu\u1ed3n nguy\u00ean li\u1ec7u bi\u1ebfn d\u1ecb di truy\u1ec1n th\u1ee9 c\u1ea5p, cung c\u1ea5p cho s\u1ef1 ti\u1ebfn h\u00f3a. C\u00e1c bi\u1ebfn d\u1ecb m\u00e0 t\u1eeb 1 v\u00e0i lo\u00e0i ban \u0111\u1ea7u c\u00f3 th\u1ec3 t\u1ea1o ra nhi\u1ec1u lo\u1ea1i m\u1edbi \u0111a d\u1ea1ng. V\u1eady n\u00ean, trong ph\u01b0\u01a1ng ph\u00e1p l\u1ef1a ch\u1ecdn gi\u1ed1ng d\u1ef1a tr\u00ean c\u00f3 ch\u1ebf bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p \u0111\u00e3 \u0111\u1ec1 xu\u1ea5t ph\u01b0\u01a1ng ph\u00e1p lai gi\u1ed1ng \u0111\u1ec3 t\u1ea1o n\u00ean c\u00e1c gi\u00e1 tr\u1ecb m\u1edbi m\u1ed9t c\u00e1ch nhanh ch\u00f3ng.<\/p>\n\n\n\n
Bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p l\u00e0 d\u1ea1ng bi\u1ebfn d\u1ecb \u0111\u01b0\u1ee3c di\u1ec5n ra th\u01b0\u1eddng xuy\u00ean v\u00e0 phong ph\u00fa trong t\u1ef1 nhi\u00ean mang \u00fd ngh\u0129a quan tr\u1ecdng c\u1ee7a qu\u00e1 tr\u00ecnh ti\u1ebfn h\u00f3a. Trong qu\u00e1 tr\u00ecnh ch\u1ecdn gi\u1ed1ng, con ng\u01b0\u1eddi lu\u00f4n duy tr\u00ec c\u00e1c ki\u1ec3u gen t\u1ed1t, lo\u1ea1i b\u1ecf gen x\u1ea5u \u0111\u1ec3 \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c c\u00e1c nhu c\u1ea7u ph\u1ee9c t\u1ea1p v\u00e0 s\u1ef1 \u0111a d\u1ea1ng trong cu\u1ed9c s\u1ed1ng hi\u1ec7n nay.<\/p>\n\n\n\n
V\u00ec sao bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p quan tr\u1ecdng trong vi\u1ec7c ch\u1ecdn gi\u1ed1ng?<\/p>\n\n\n\n
Bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p gi\u1eef m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c ch\u1ecdn gi\u1ed1ng v\u00ec nh\u1edd c\u00f3 bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p m\u00e0 ta c\u00f3 th\u1ec3 t\u1ea1o th\u00e0nh nhi\u1ec1u lo\u00e0i m\u1edbi, c\u00f3 l\u1ee3i. Ph\u01b0\u01a1ng ph\u00e1p lai c\u00e2y tr\u1ed3ng v\u00e0 sinh v\u1eadt th\u00f4ng qua bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p c\u00f3 n\u0103ng su\u1ea5t cao, t\u1ed1t h\u01a1n so v\u1edbi g\u1ed1c ban \u0111\u1ea7u.<\/p>\n\n\n\n
H\u01a1n n\u1eefa, bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p c\u00f2n l\u00e0 lo\u1ea1i bi\u1ebfn d\u1ecb kh\u00f4ng g\u00e2y h\u1ea1i c\u0169ng nh\u01b0ng kh\u00f4ng l\u00e0m ch\u1ebft, gi\u1ea3m kh\u1ea3 n\u0103ng sinh s\u1ed1ng c\u1ee7a sinh v\u1eadt. Bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p t\u1ea1o ra c\u00e1c ki\u1ec3u gen kh\u00e1c nhau \u0111\u1ec3 l\u00e0m nguy\u00ean li\u1ec7u cho vi\u1ec7c ch\u1ecdn gi\u1ed1ng v\u00e0 ti\u1ebfn h\u00f3a.<\/p>\n\n\n\n
V\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n m\u1ea1nh m\u1ebd c\u1ee7a khoa h\u1ecdc nghi\u00ean c\u1ee9u, con ng\u01b0\u1eddi \u0111\u00e3 \u1ee9ng d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p nu\u00f4i c\u1ea5y t\u1ebf b\u00e0o tr\u00ean m\u00f4i tr\u01b0\u1eddng dinh d\u01b0\u1ee1ng nh\u00e2n t\u1ea1o. \u0110i\u1ec1u n\u00e0y \u0111\u00e3 gi\u00fap t\u1ea1o ra c\u00e1c m\u00f4, c\u01a1 quan hay c\u01a1 th\u1ec3 ho\u00e0n ch\u1ec9nh v\u1edbi \u0111\u1ea7y \u0111\u1ee7 c\u00e1c t\u00ednh tr\u1ea1ng c\u1ee7a c\u01a1 th\u1ec3 g\u1ed1c. V\u00e0 quy tr\u00ecnh n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 c\u00f4ng ngh\u1ec7 t\u1ebf b\u00e0o.<\/p>\n\n\n\n
Bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p trong sinh s\u1ea3n h\u1eefu t\u00ednh v\u00e0 v\u00f4 t\u00ednh<\/p>\n\n\n\n
Bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p trong sinh s\u1ea3n v\u00f4 t\u00ednh: H\u1ea7u h\u1ebft kh\u00f4ng c\u00f3 bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p. Nguy\u00ean nh\u00e2n \u0111\u00f3 l\u00e0 do c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m sinh s\u1ea3n kh\u00f4ng c\u00f3 th\u1ee5 tinh m\u00e0 n\u00f3 ch\u1ec9 c\u00f3 s\u1ef1 gi\u1ea3m ph\u00e2n, h\u00ecnh th\u00e0nh giao t\u1eed v\u00e0 h\u00ecnh th\u00e0nh qua t\u1ebf b\u00e0o m\u1eb9 nh\u1edd qu\u00e1 tr\u00ecnh nguy\u00ean ph\u00e2n.<\/p>\n\n\n\n
Bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p trong sinh s\u1ea3n h\u1eefu t\u00ednh: Kh\u00e1c bi\u1ec7t ho\u00e0n to\u00e0n v\u1edbi bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p trong sinh s\u1ea3n v\u00f4 t\u00ednh. N\u00f3 xu\u1ea5t hi\u1ec7n ph\u00e2n li \u0111\u1ed9c l\u1eadp v\u00e0 t\u1ed5 h\u1ee3p gen trong qu\u00e1 tr\u00ecnh ph\u00e1t sinh giao t\u1eed \u0111\u1ec3 t\u1ea1o ra c\u00e1c giao t\u1eed kh\u00e1c nhau. Qu\u00e1 tr\u00ecnh th\u1ee5 tinh \u0111\u01b0\u1ee3c t\u1ed5 h\u1ee3p qua l\u1ea1i, t\u1ea1o ra nhi\u1ec1u t\u1ed5 h\u1ee3p kh\u00e1c nhau. V\u00e0 \u0111\u00e2y c\u0169ng ch\u00ednh l\u00e0 nguy\u00ean nh\u00e2n l\u00e0m xu\u1ea5t hi\u1ec7n bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p.<\/p>\n\n\n\n
Hy v\u1ecdng, c\u00e1c th\u00f4ng tin trong b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y s\u1ebd gi\u00fap \u00edch b\u1ea1n hi\u1ec3u th\u00eam v\u1ec1 bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p. N\u1ebfu c\u00f3 b\u1ea5t k\u1ef3 c\u00e2u h\u1ecfi n\u00e0o c\u1ea7n gi\u1ea3i \u0111\u00e1p, qu\u00fd b\u1ea1n \u0111\u1ecdc h\u00e3y comment ph\u00eda d\u01b0\u1edbi, Vietlearn.org s\u1ebd h\u1ed7 tr\u1ee3 b\u1ea1n nhanh ch\u00f3ng.<\/p>\n\n\n\n
<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn Bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p l\u00e0 g\u00ec? L\u00e0 m\u1ed9t h\u00ecnh th\u1ee9c \u0111\u01b0\u1ee3c \u01b0u ti\u00ean l\u1ef1a ch\u1ecdn trong khoa h\u1ecdc ch\u1ecdn gi\u1ed1ng; gi\u1eef l\u1ea1i gen t\u1ed1t v\u00e0 lo\u1ea1i b\u1ecf c\u00e1c gen x\u1ea5u. \u0110\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 kh\u00e1i ni\u1ec7m, \u0111\u1eb7c \u0111i\u1ec3m, \u00fd ngh\u0129a c\u1ee7a bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p, qu\u00fd b\u1ea1n \u0111\u1ecdc […]<\/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":[1],"tags":[],"class_list":["post-4080","post","type-post","status-publish","format-standard","hentry","category-general"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/4080","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=4080"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/4080\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=4080"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=4080"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=4080"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}