{"id":567261,"date":"2026-07-22T09:47:40","date_gmt":"2026-07-22T02:47:40","guid":{"rendered":"https:\/\/hoanghamobile.com\/tin-tuc\/?p=567261"},"modified":"2026-07-22T09:47:40","modified_gmt":"2026-07-22T02:47:40","slug":"giam-phan-la-gi","status":"publish","type":"post","link":"https:\/\/hoanghamobile.com\/tin-tuc\/giam-phan-la-gi\/","title":{"rendered":"Gi\u1ea3m ph\u00e2n l\u00e0 g\u00ec? Di\u1ec5n bi\u1ebfn, k\u1ebft qu\u1ea3 v\u00e0 so s\u00e1nh v\u1edbi nguy\u00ean ph\u00e2n"},"content":{"rendered":"

Gi\u1ea3m ph\u00e2n l\u00e0 g\u00ec?<\/strong> \u0110\u00e2y l\u00e0 qu\u00e1 tr\u00ecnh ph\u00e2n b\u00e0o x\u1ea3y ra \u1edf t\u1ebf b\u00e0o sinh d\u1ee5c ch\u00edn, trong \u0111\u00f3 m\u1ed9t t\u1ebf b\u00e0o m\u1eb9 (2n) qua hai l\u1ea7n ph\u00e2n b\u00e0o li\u00ean ti\u1ebfp t\u1ea1o ra b\u1ed1n t\u1ebf b\u00e0o con c\u00f3 b\u1ed9 nhi\u1ec5m s\u1eafc th\u1ec3 gi\u1ea3m \u0111i m\u1ed9t n\u1eeda (n). Gi\u1ea3m ph\u00e2n l\u00e0 c\u01a1 s\u1edf \u0111\u1ec3 t\u1ea1o giao t\u1eed (tinh tr\u00f9ng, tr\u1ee9ng) trong sinh s\u1ea3n h\u1eefu t\u00ednh. \u0110\u00e2y l\u00e0 ki\u1ebfn th\u1ee9c tr\u1ecdng t\u00e2m c\u1ee7a m\u00f4n Sinh h\u1ecdc. B\u00e0i vi\u1ebft n\u00e0y tr\u00ecnh b\u00e0y gi\u1ea3m ph\u00e2n l\u00e0 g\u00ec, di\u1ec5n bi\u1ebfn qua hai l\u1ea7n ph\u00e2n b\u00e0o, k\u1ebft qu\u1ea3, \u00fd ngh\u0129a, so s\u00e1nh v\u1edbi nguy\u00ean ph\u00e2n v\u00e0 \u1ee9ng d\u1ee5ng.<\/span><\/p>\n

Gi\u1ea3m ph\u00e2n l\u00e0 g\u00ec?<\/b><\/h2>\n

Gi\u1ea3m ph\u00e2n (ph\u00e2n b\u00e0o gi\u1ea3m nhi\u1ec5m) l\u00e0 h\u00ecnh th\u1ee9c ph\u00e2n chia c\u1ee7a c\u00e1c t\u1ebf b\u00e0o sinh d\u1ee5c \u1edf th\u1eddi k\u1ef3 ch\u00edn, t\u1ea1o ra c\u00e1c t\u1ebf b\u00e0o con c\u00f3 s\u1ed1 l\u01b0\u1ee3ng nhi\u1ec5m s\u1eafc th\u1ec3 gi\u1ea3m c\u00f2n m\u1ed9t n\u1eeda so v\u1edbi t\u1ebf b\u00e0o m\u1eb9. N\u1ebfu t\u1ebf b\u00e0o m\u1eb9 c\u00f3 b\u1ed9 nhi\u1ec5m s\u1eafc th\u1ec3 2n th\u00ec m\u1ed7i t\u1ebf b\u00e0o con sau gi\u1ea3m ph\u00e2n ch\u1ec9 c\u00f2n n nhi\u1ec5m s\u1eafc th\u1ec3. \u0110\u1eb7c \u0111i\u1ec3m quan tr\u1ecdng l\u00e0 nhi\u1ec5m s\u1eafc th\u1ec3 ch\u1ec9 nh\u00e2n \u0111\u00f4i m\u1ed9t l\u1ea7n, nh\u01b0ng t\u1ebf b\u00e0o ph\u00e2n chia hai l\u1ea7n li\u00ean ti\u1ebfp.<\/span><\/p>\n

\"giam-phan-la-gi-1\"<\/p>\n

Di\u1ec5n bi\u1ebfn c\u1ee7a gi\u1ea3m ph\u00e2n<\/b><\/h2>\n

Gi\u1ea3m ph\u00e2n di\u1ec5n ra qua hai l\u1ea7n ph\u00e2n b\u00e0o li\u00ean ti\u1ebfp l\u00e0 gi\u1ea3m ph\u00e2n I v\u00e0 gi\u1ea3m ph\u00e2n II. Hai l\u1ea7n ph\u00e2n b\u00e0o n\u00e0y gi\u00fap gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng nhi\u1ec5m s\u1eafc th\u1ec3 t\u1eeb 2n xu\u1ed1ng n, \u0111\u1ed3ng th\u1eddi t\u1ea1o ra s\u1ef1 \u0111a d\u1ea1ng di truy\u1ec1n \u1edf c\u00e1c giao t\u1eed.<\/span><\/p>\n

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  • Gi\u1ea3m ph\u00e2n I: C\u00e1c nhi\u1ec5m s\u1eafc th\u1ec3 k\u00e9p trong t\u1eebng c\u1eb7p nhi\u1ec5m s\u1eafc th\u1ec3 t\u01b0\u01a1ng \u0111\u1ed3ng ti\u1ebfp h\u1ee3p v\u1edbi nhau v\u00e0 c\u00f3 th\u1ec3 x\u1ea3y ra trao \u0111\u1ed5i ch\u00e9o. Sau \u0111\u00f3, c\u00e1c c\u1eb7p nhi\u1ec5m s\u1eafc th\u1ec3 t\u01b0\u01a1ng \u0111\u1ed3ng ph\u00e2n li \u0111\u1ed9c l\u1eadp, m\u1ed7i nhi\u1ec5m s\u1eafc th\u1ec3 k\u00e9p \u0111i v\u1ec1 m\u1ed9t c\u1ef1c c\u1ee7a t\u1ebf b\u00e0o. K\u1ebft qu\u1ea3 t\u1ea1o ra hai t\u1ebf b\u00e0o con, m\u1ed7i t\u1ebf b\u00e0o c\u00f3 b\u1ed9 nhi\u1ec5m s\u1eafc th\u1ec3 k\u00e9p n.<\/span><\/li>\n
  • Gi\u1ea3m ph\u00e2n II: Di\u1ec5n ra t\u01b0\u01a1ng t\u1ef1 nguy\u00ean ph\u00e2n. C\u00e1c nhi\u1ec5m s\u1eafc t\u1eed ch\u1ecb em c\u1ee7a m\u1ed7i nhi\u1ec5m s\u1eafc th\u1ec3 k\u00e9p t\u00e1ch nhau v\u00e0 ph\u00e2n li v\u1ec1 hai c\u1ef1c c\u1ee7a t\u1ebf b\u00e0o. K\u1ebft qu\u1ea3 t\u1ea1o th\u00e0nh b\u1ed1n t\u1ebf b\u00e0o con, m\u1ed7i t\u1ebf b\u00e0o c\u00f3 b\u1ed9 nhi\u1ec5m s\u1eafc th\u1ec3 \u0111\u01a1n n.<\/span><\/li>\n
  • Gi\u1eefa gi\u1ea3m ph\u00e2n I v\u00e0 gi\u1ea3m ph\u00e2n II: Nhi\u1ec5m s\u1eafc th\u1ec3 kh\u00f4ng nh\u00e2n \u0111\u00f4i th\u00eam m\u1ed9t l\u1ea7n n\u1eefa, v\u00ec v\u1eady s\u1ed1 l\u01b0\u1ee3ng nhi\u1ec5m s\u1eafc th\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3m t\u1eeb 2n xu\u1ed1ng n, \u0111\u1ea3m b\u1ea3o t\u1ea1o ra c\u00e1c giao t\u1eed mang b\u1ed9 nhi\u1ec5m s\u1eafc th\u1ec3 \u0111\u01a1n b\u1ed9i.<\/span><\/li>\n<\/ul>\n

    K\u1ebft qu\u1ea3 c\u1ee7a gi\u1ea3m ph\u00e2n l\u00e0 g\u00ec<\/b><\/h2>\n

    Gi\u1ea3m ph\u00e2n t\u1ea1o ra c\u00e1c t\u1ebf b\u00e0o con c\u00f3 s\u1ed1 l\u01b0\u1ee3ng nhi\u1ec5m s\u1eafc th\u1ec3 gi\u1ea3m \u0111i m\u1ed9t n\u1eeda so v\u1edbi t\u1ebf b\u00e0o m\u1eb9. \u0110\u00e2y l\u00e0 c\u01a1 s\u1edf \u0111\u1ec3 h\u00ecnh th\u00e0nh giao t\u1eed v\u00e0 duy tr\u00ec \u1ed5n \u0111\u1ecbnh b\u1ed9 nhi\u1ec5m s\u1eafc th\u1ec3 c\u1ee7a lo\u00e0i qua qu\u00e1 tr\u00ecnh sinh s\u1ea3n h\u1eefu t\u00ednh.<\/span><\/p>\n

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    • T\u1ea1o ra b\u1ed1n t\u1ebf b\u00e0o con: T\u1eeb m\u1ed9t t\u1ebf b\u00e0o m\u1eb9 c\u00f3 b\u1ed9 nhi\u1ec5m s\u1eafc th\u1ec3 2n, qu\u00e1 tr\u00ecnh gi\u1ea3m ph\u00e2n t\u1ea1o th\u00e0nh b\u1ed1n t\u1ebf b\u00e0o con.<\/span><\/li>\n
    • Gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng nhi\u1ec5m s\u1eafc th\u1ec3: M\u1ed7i t\u1ebf b\u00e0o con \u0111\u1ec1u mang b\u1ed9 nhi\u1ec5m s\u1eafc th\u1ec3 \u0111\u01a1n b\u1ed9i (n), b\u1eb1ng m\u1ed9t n\u1eeda s\u1ed1 l\u01b0\u1ee3ng nhi\u1ec5m s\u1eafc th\u1ec3 c\u1ee7a t\u1ebf b\u00e0o m\u1eb9.<\/span><\/li>\n
    • C\u01a1 s\u1edf h\u00ecnh th\u00e0nh giao t\u1eed: C\u00e1c t\u1ebf b\u00e0o con t\u1ea1o th\u00e0nh sau gi\u1ea3m ph\u00e2n ph\u00e1t tri\u1ec3n th\u00e0nh giao t\u1eed \u1edf \u0111\u1ed9ng v\u1eadt ho\u1eb7c b\u00e0o t\u1eed \u1edf nhi\u1ec1u nh\u00f3m th\u1ef1c v\u1eadt v\u00e0 n\u1ea5m, g\u00f3p ph\u1ea7n duy tr\u00ec \u1ed5n \u0111\u1ecbnh b\u1ed9 nhi\u1ec5m s\u1eafc th\u1ec3 c\u1ee7a lo\u00e0i qua c\u00e1c th\u1ebf h\u1ec7.<\/span><\/li>\n<\/ul>\n

      \"giam-phan-la-gi-2\"<\/p>\n

      \u00dd ngh\u0129a c\u1ee7a gi\u1ea3m ph\u00e2n<\/b><\/h2>\n

      Gi\u1ea3m ph\u00e2n c\u00f3 vai tr\u00f2 quan tr\u1ecdng trong sinh s\u1ea3n h\u1eefu t\u00ednh v\u00e0 s\u1ef1 duy tr\u00ec \u1ed5n \u0111\u1ecbnh c\u1ee7a lo\u00e0i. Qu\u00e1 tr\u00ecnh n\u00e0y kh\u00f4ng ch\u1ec9 t\u1ea1o ra c\u00e1c giao t\u1eed mang b\u1ed9 nhi\u1ec5m s\u1eafc th\u1ec3 \u0111\u01a1n b\u1ed9i m\u00e0 c\u00f2n g\u00f3p ph\u1ea7n t\u1ea1o n\u00ean s\u1ef1 \u0111a d\u1ea1ng di truy\u1ec1n, l\u00e0 c\u01a1 s\u1edf cho qu\u00e1 tr\u00ecnh ti\u1ebfn h\u00f3a v\u00e0 th\u00edch nghi c\u1ee7a sinh v\u1eadt.<\/span><\/p>\n

      \u00dd ngh\u0129a c\u1ee7a gi\u1ea3m ph\u00e2n:<\/span><\/p>\n

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      • T\u1ea1o giao t\u1eed: L\u00e0 c\u01a1 s\u1edf h\u00ecnh th\u00e0nh c\u00e1c giao t\u1eed (tinh tr\u00f9ng v\u00e0 tr\u1ee9ng \u1edf \u0111\u1ed9ng v\u1eadt; giao t\u1eed ho\u1eb7c b\u00e0o t\u1eed \u1edf nhi\u1ec1u nh\u00f3m th\u1ef1c v\u1eadt), ph\u1ee5c v\u1ee5 cho qu\u00e1 tr\u00ecnh sinh s\u1ea3n h\u1eefu t\u00ednh.<\/span><\/li>\n
      • Duy tr\u00ec \u1ed5n \u0111\u1ecbnh b\u1ed9 nhi\u1ec5m s\u1eafc th\u1ec3 c\u1ee7a lo\u00e0i: Gi\u1ea3m ph\u00e2n t\u1ea1o ra c\u00e1c giao t\u1eed mang b\u1ed9 nhi\u1ec5m s\u1eafc th\u1ec3 n. Khi hai giao t\u1eed k\u1ebft h\u1ee3p trong qu\u00e1 tr\u00ecnh th\u1ee5 tinh, b\u1ed9 nhi\u1ec5m s\u1eafc th\u1ec3 2n \u0111\u01b0\u1ee3c kh\u00f4i ph\u1ee5c, gi\u00fap duy tr\u00ec \u1ed5n \u0111\u1ecbnh s\u1ed1 l\u01b0\u1ee3ng nhi\u1ec5m s\u1eafc th\u1ec3 \u0111\u1eb7c tr\u01b0ng c\u1ee7a lo\u00e0i qua c\u00e1c th\u1ebf h\u1ec7.<\/span><\/li>\n
      • T\u1ea1o \u0111a d\u1ea1ng di truy\u1ec1n: S\u1ef1 trao \u0111\u1ed5i ch\u00e9o gi\u1eefa c\u00e1c nhi\u1ec5m s\u1eafc th\u1ec3 t\u01b0\u01a1ng \u0111\u1ed3ng v\u00e0 s\u1ef1 ph\u00e2n li \u0111\u1ed9c l\u1eadp c\u1ee7a c\u00e1c c\u1eb7p nhi\u1ec5m s\u1eafc th\u1ec3 trong gi\u1ea3m ph\u00e2n t\u1ea1o ra nhi\u1ec1u lo\u1ea1i giao t\u1eed kh\u00e1c nhau, l\u00e0m t\u0103ng s\u1ef1 \u0111a d\u1ea1ng v\u1ec1 t\u1ed5 h\u1ee3p gen \u1edf th\u1ebf h\u1ec7 sau.<\/span><\/li>\n<\/ul>\n

        So s\u00e1nh nguy\u00ean ph\u00e2n v\u00e0 gi\u1ea3m ph\u00e2n<\/b><\/h2>\n

        Gi\u1ea3m ph\u00e2n l\u00e0 g\u00ec?<\/strong> Nguy\u00ean ph\u00e2n v\u00e0 gi\u1ea3m ph\u00e2n \u0111\u1ec1u l\u00e0 c\u00e1c h\u00ecnh th\u1ee9c ph\u00e2n b\u00e0o \u1edf sinh v\u1eadt nh\u00e2n th\u1ef1c, nh\u01b0ng kh\u00e1c nhau v\u1ec1 s\u1ed1 l\u1ea7n ph\u00e2n b\u00e0o, k\u1ebft qu\u1ea3 t\u1ea1o th\u00e0nh v\u00e0 vai tr\u00f2 \u0111\u1ed1i v\u1edbi c\u01a1 th\u1ec3. B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y t\u00f3m t\u1eaft nh\u1eefng \u0111i\u1ec3m kh\u00e1c nhau c\u01a1 b\u1ea3n gi\u1eefa hai qu\u00e1 tr\u00ecnh.<\/span><\/p>\n\n\n\n\n\n\n\n\n\n
        Ti\u00eau ch\u00ed<\/b><\/td>\nNguy\u00ean ph\u00e2n<\/b><\/td>\nGi\u1ea3m ph\u00e2n<\/b><\/td>\n<\/tr>\n
        X\u1ea3y ra \u1edf<\/b><\/td>\nT\u1ebf b\u00e0o sinh d\u01b0\u1ee1ng<\/span><\/td>\nT\u1ebf b\u00e0o sinh d\u1ee5c ch\u00edn<\/span><\/td>\n<\/tr>\n
        S\u1ed1 l\u1ea7n ph\u00e2n b\u00e0o<\/b><\/td>\n1 l\u1ea7n<\/span><\/td>\n2 l\u1ea7n ph\u00e2n b\u00e0o li\u00ean ti\u1ebfp<\/span><\/td>\n<\/tr>\n
        S\u1ed1 t\u1ebf b\u00e0o con t\u1ea1o th\u00e0nh<\/b><\/td>\n2 t\u1ebf b\u00e0o con<\/span><\/td>\n4 t\u1ebf b\u00e0o con<\/span><\/td>\n<\/tr>\n
        B\u1ed9 nhi\u1ec5m s\u1eafc th\u1ec3 c\u1ee7a t\u1ebf b\u00e0o con<\/b><\/td>\n2n (gi\u1eef nguy\u00ean so v\u1edbi t\u1ebf b\u00e0o m\u1eb9)<\/span><\/td>\nn (gi\u1ea3m m\u1ed9t n\u1eeda so v\u1edbi t\u1ebf b\u00e0o m\u1eb9)<\/span><\/td>\n<\/tr>\n
        \u0110\u1eb7c \u0111i\u1ec3m di truy\u1ec1n c\u1ee7a t\u1ebf b\u00e0o con<\/b><\/td>\nGi\u1ed1ng nhau v\u00e0 gi\u1ed1ng t\u1ebf b\u00e0o m\u1eb9<\/span><\/td>\nKh\u00e1c nhau v\u1ec1 t\u1ed5 h\u1ee3p gen do trao \u0111\u1ed5i ch\u00e9o v\u00e0 ph\u00e2n li \u0111\u1ed9c l\u1eadp<\/span><\/td>\n<\/tr>\n
        Vai tr\u00f2<\/b><\/td>\nGi\u00fap c\u01a1 th\u1ec3 sinh tr\u01b0\u1edfng, ph\u00e1t tri\u1ec3n, t\u00e1i t\u1ea1o m\u00f4 v\u00e0 sinh s\u1ea3n v\u00f4 t\u00ednh<\/span><\/td>\nT\u1ea1o giao t\u1eed, duy tr\u00ec \u1ed5n \u0111\u1ecbnh b\u1ed9 nhi\u1ec5m s\u1eafc th\u1ec3 c\u1ee7a lo\u00e0i v\u00e0 t\u1ea1o \u0111a d\u1ea1ng di truy\u1ec1n<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        \"giam-phan-la-gi-3\"<\/p>\n

        \u00dd ngh\u0129a c\u1ee7a trao \u0111\u1ed5i ch\u00e9o<\/b><\/h2>\n

        Trao \u0111\u1ed5i ch\u00e9o l\u00e0 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng quan tr\u1ecdng di\u1ec5n ra trong gi\u1ea3m ph\u00e2n I, g\u00f3p ph\u1ea7n t\u1ea1o n\u00ean s\u1ef1 \u0111a d\u1ea1ng di truy\u1ec1n \u1edf sinh v\u1eadt. Nh\u1edd s\u1ef1 trao \u0111\u1ed5i c\u00e1c \u0111o\u1ea1n ADN gi\u1eefa c\u00e1c nhi\u1ec5m s\u1eafc th\u1ec3 t\u01b0\u01a1ng \u0111\u1ed3ng, c\u00e1c giao t\u1eed \u0111\u01b0\u1ee3c t\u1ea1o ra mang nh\u1eefng t\u1ed5 h\u1ee3p gen m\u1edbi, l\u00e0m t\u0103ng t\u00ednh \u0111a d\u1ea1ng c\u1ee7a th\u1ebf h\u1ec7 sau.<\/span><\/p>\n

        \u00dd ngh\u0129a c\u1ee7a trao \u0111\u1ed5i ch\u00e9o:<\/span><\/p>\n

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        • T\u1ea1o t\u1ed5 h\u1ee3p gen m\u1edbi: S\u1ef1 trao \u0111\u1ed5i c\u00e1c \u0111o\u1ea1n gi\u1eefa c\u00e1c nhi\u1ec5m s\u1eafc th\u1ec3 t\u01b0\u01a1ng \u0111\u1ed3ng t\u1ea1o ra c\u00e1c nhi\u1ec5m s\u1eafc th\u1ec3 mang t\u1ed5 h\u1ee3p gen m\u1edbi, kh\u00e1c v\u1edbi nhi\u1ec5m s\u1eafc th\u1ec3 c\u1ee7a b\u1ed1 m\u1eb9.<\/span><\/li>\n
        • L\u00e0m t\u0103ng \u0111a d\u1ea1ng di truy\u1ec1n: K\u1ebft h\u1ee3p v\u1edbi s\u1ef1 ph\u00e2n li \u0111\u1ed9c l\u1eadp c\u1ee7a c\u00e1c c\u1eb7p nhi\u1ec5m s\u1eafc th\u1ec3 trong gi\u1ea3m ph\u00e2n, hi\u1ec7n t\u01b0\u1ee3ng trao \u0111\u1ed5i ch\u00e9o t\u1ea1o ra nhi\u1ec1u lo\u1ea1i giao t\u1eed kh\u00e1c nhau.<\/span><\/li>\n
        • T\u1ea1o ngu\u1ed3n bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p: C\u00e1c t\u1ed5 h\u1ee3p gen m\u1edbi \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh l\u00e0 ngu\u1ed3n g\u1ed1c c\u1ee7a bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p, l\u00e0m cho c\u00e1c c\u00e1 th\u1ec3 sinh ra trong c\u00f9ng m\u1ed9t lo\u00e0i, k\u1ec3 c\u1ea3 con c\u00e1i trong c\u00f9ng m\u1ed9t gia \u0111\u00ecnh, v\u1eabn c\u00f3 nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m di truy\u1ec1n kh\u00e1c nhau.<\/span><\/li>\n
        • \u00dd ngh\u0129a \u0111\u1ed1i v\u1edbi ti\u1ebfn h\u00f3a v\u00e0 ch\u1ecdn gi\u1ed1ng: S\u1ef1 \u0111a d\u1ea1ng di truy\u1ec1n do trao \u0111\u1ed5i ch\u00e9o t\u1ea1o ra l\u00e0 ngu\u1ed3n nguy\u00ean li\u1ec7u quan tr\u1ecdng cho qu\u00e1 tr\u00ecnh ti\u1ebfn h\u00f3a v\u00e0 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong c\u00f4ng t\u00e1c ch\u1ecdn gi\u1ed1ng.<\/span><\/li>\n<\/ul>\n

          Vai tr\u00f2 c\u1ee7a gi\u1ea3m ph\u00e2n l\u00e0 g\u00ec v\u1edbi sinh s\u1ea3n h\u1eefu t\u00ednh<\/b><\/h2>\n

          Gi\u1ea3m ph\u00e2n k\u1ebft h\u1ee3p v\u1edbi th\u1ee5 tinh t\u1ea1o n\u00ean c\u01a1 ch\u1ebf duy tr\u00ec \u1ed5n \u0111\u1ecbnh b\u1ed9 nhi\u1ec5m s\u1eafc th\u1ec3 c\u1ee7a lo\u00e0i qua c\u00e1c th\u1ebf h\u1ec7. Nh\u1edd gi\u1ea3m ph\u00e2n, giao t\u1eed ch\u1ec9 mang b\u1ed9 nhi\u1ec5m s\u1eafc th\u1ec3 n; khi hai giao t\u1eed k\u1ebft h\u1ee3p trong th\u1ee5 tinh, h\u1ee3p t\u1eed l\u1ea1i c\u00f3 b\u1ed9 2n gi\u1ed1ng b\u1ed1 m\u1eb9. \u0110\u1ed3ng th\u1eddi, s\u1ef1 \u0111a d\u1ea1ng giao t\u1eed do gi\u1ea3m ph\u00e2n t\u1ea1o ra l\u00e0 ngu\u1ed3n nguy\u00ean li\u1ec7u quan tr\u1ecdng cho ch\u1ecdn l\u1ecdc t\u1ef1 nhi\u00ean v\u00e0 ti\u1ebfn h\u00f3a c\u1ee7a sinh v\u1eadt.<\/span><\/p>\n

          \"giam-phan-la-gi-4\"<\/p>\n

          C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 gi\u1ea3m ph\u00e2n<\/b><\/h2>\n

          Gi\u1ea3m ph\u00e2n l\u00e0 g\u00ec?<\/b><\/h3>\n

          L\u00e0 qu\u00e1 tr\u00ecnh ph\u00e2n b\u00e0o \u1edf t\u1ebf b\u00e0o sinh d\u1ee5c, t\u1ea1o ra 4 t\u1ebf b\u00e0o con c\u00f3 b\u1ed9 nhi\u1ec5m s\u1eafc th\u1ec3 gi\u1ea3m c\u00f2n m\u1ed9t n\u1eeda (n).<\/span><\/p>\n

          Gi\u1ea3m ph\u00e2n t\u1ea1o ra bao nhi\u00eau t\u1ebf b\u00e0o con?<\/b><\/h3>\n

          T\u1eeb 1 t\u1ebf b\u00e0o m\u1eb9 (2n) t\u1ea1o ra 4 t\u1ebf b\u00e0o con, m\u1ed7i t\u1ebf b\u00e0o c\u00f3 n nhi\u1ec5m s\u1eafc th\u1ec3.<\/span><\/p>\n

          Gi\u1ea3m ph\u00e2n g\u1ed3m m\u1ea5y l\u1ea7n ph\u00e2n b\u00e0o?<\/b><\/h3>\n

          Hai l\u1ea7n ph\u00e2n b\u00e0o li\u00ean ti\u1ebfp, nh\u01b0ng nhi\u1ec5m s\u1eafc th\u1ec3 ch\u1ec9 nh\u00e2n \u0111\u00f4i m\u1ed9t l\u1ea7n.<\/span><\/p>\n

          \u00dd ngh\u0129a c\u1ee7a gi\u1ea3m ph\u00e2n l\u00e0 g\u00ec?<\/b><\/h3>\n

          T\u1ea1o giao t\u1eed, duy tr\u00ec b\u1ed9 nhi\u1ec5m s\u1eafc th\u1ec3 c\u1ee7a lo\u00e0i qua th\u1ee5 tinh v\u00e0 t\u1ea1o \u0111a d\u1ea1ng di truy\u1ec1n.<\/span><\/p>\n

          Gi\u1ea3m ph\u00e2n kh\u00e1c nguy\u00ean ph\u00e2n th\u1ebf n\u00e0o?<\/b><\/h3>\n

          Gi\u1ea3m ph\u00e2n t\u1ea1o 4 t\u1ebf b\u00e0o con (n) qua 2 l\u1ea7n ph\u00e2n b\u00e0o; nguy\u00ean ph\u00e2n t\u1ea1o 2 t\u1ebf b\u00e0o con (2n) qua 1 l\u1ea7n.<\/span><\/p>\n

          K\u1ebft lu\u1eadn<\/b><\/h2>\n

          Gi\u1ea3m ph\u00e2n l\u00e0 g\u00ec?<\/strong> T\u00f3m l\u1ea1i, <\/span>gi\u1ea3m ph\u00e2n<\/b> t\u1ea1o ra b\u1ed1n t\u1ebf b\u00e0o con c\u00f3 b\u1ed9 nhi\u1ec5m s\u1eafc th\u1ec3 n qua hai l\u1ea7n ph\u00e2n b\u00e0o li\u00ean ti\u1ebfp, l\u00e0 c\u01a1 s\u1edf t\u1ea1o giao t\u1eed, duy tr\u00ec b\u1ed9 nhi\u1ec5m s\u1eafc th\u1ec3 c\u1ee7a lo\u00e0i v\u00e0 t\u1ea1o bi\u1ebfn d\u1ecb t\u1ed5 h\u1ee3p. N\u1eafm v\u1eefng di\u1ec5n bi\u1ebfn v\u00e0 so s\u00e1nh v\u1edbi nguy\u00ean ph\u00e2n s\u1ebd gi\u00fap b\u1ea1n h\u1ecdc t\u1ed1t ph\u1ea7n di truy\u1ec1n. \u0110\u1ec3 h\u1ecdc th\u00eam, m\u1eddi b\u1ea1n tham kh\u1ea3o c\u00e1c b\u00e0i<\/span> \u0103n tr\u1ee9ng \u0111\u00fang c\u00e1ch<\/span><\/a>,<\/span> m\u1ed9t n\u0103m \u00e1nh s\u00e1ng b\u1eb1ng bao nhi\u00eau km<\/span><\/a> v\u00e0<\/span> di\u1ec7n t\u00edch c\u00e1c t\u1ec9nh Vi\u1ec7t Nam<\/span><\/a> tr\u00ean chuy\u00ean m\u1ee5c tin t\u1ee9c c\u1ee7a Ho\u00e0ng H\u00e0 Mobile.\u00a0<\/span><\/p>\n

          Xem th\u00eam:<\/b><\/p>\n

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          • \n

            Virus ch\u1ed1ng ung th\u01b0: Li\u1ec7u ph\u00e1p sinh h\u1ecdc t\u1ed1i \u01b0u chi ph\u00ed v\u00e0 an to\u00e0n<\/a><\/p>\n<\/li>\n

          • \n

            Th\u1ef1c \u0110\u01a1n T\u0103ng C\u00e2n L\u00e0nh M\u1ea1nh: G\u1ee3i \u00dd Theo B\u1eefa & Nguy\u00ean T\u1eafc Khoa H\u1ecdc<\/a><\/p>\n<\/li>\n<\/ul>\n