Puas yog inbreeding random mating?
Puas yog inbreeding random mating?

Video: Puas yog inbreeding random mating?

Video: Puas yog inbreeding random mating?
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Anonim

Thaum qhov tshwm sim zoo ib yam, cov tib neeg tsuas yog nyiam ua phooj ywg nrog cov txheeb ze nyob deb li nrog cov txheeb ze ze - qhov no yog random mating . Kev yug me nyuam - Cov tib neeg feem ntau yuav ua phooj ywg nrog cov txheeb ze ze (xws li lawv cov neeg nyob ze) dua li cov txheeb ze nyob deb. Qhov no yog qhov ntau.

Nyob rau hauv no hais txog, dab tsi yog random mating nyob rau hauv noob caj noob ces?

Random mating yog ib lub sij hawm nyob rau hauv cov pejxeem noob caj noob ces . Nws piav qhia txog qhov xwm txheej zoo tshaj plaws uas txhua tus neeg ntawm ib tug poj niam txiv neej muaj peev xwm sib npaug ntawm txhua tus tswv cuab ntawm cov poj niam cev xeeb tub. Lub sij hawm technical rau nws yog panmixia. Random mating yog ib qho ntawm cov cai rau Hardy-Weinberg txoj cai tuav.

Tsis tas li ntawd, ob qho piv txwv ntawm kev sib raug zoo tsis sib xws yog dab tsi? Qhov zoo tshaj plaws piv txwv yog nyob rau hauv peacocks, qhov twg poj niam peahen xaiv ib phooj ywg raws li qhov loj thiab flashiness ntawm tus txiv neej lub tail feathers. Qhov no sib txawv ntawm cov txiv neej thiab poj niam ntawm ib hom nyob rau hauv thiaj li yuav nyiam cov phooj ywg hu ua kev sib deev dimorphism.

Hauv qhov no, tib neeg puas sib koom ua ke?

Piv txwv li, ntau cov nroj tsuag rov tsim dua los ntawm kev sib txawv ntawm tus kheej fertilization. Ntau theem ntawm inbreeding muaj nyob rau hauv cov tsiaj. Txawm tias kev sib tw hauv tib neeg cov pejxeem ua tau raug txiav txim siab random rau feem ntau qhov zoo, tsis yog random mating kom meej meej muaj nyob rau qhov zoo xws li cov tawv nqaij xim.

Puas yog random mating nce genetic variation?

Hauv paus, random mating tswj qib ntawm noob caj noob ces variation hauv cov pejxeem. Tsis- random mating , ntawm chav kawm, yuav muaj kev sib tw ntawm tib genotypes. Yog li ntawd nws yuav nce qhov ratio ntawm ib qho ntawm cov alleles. Kev hloov pauv yog khaws cia.

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