Yuav ua li cas yog ib qho piv txwv ntawm tsis random mating?
Yuav ua li cas yog ib qho piv txwv ntawm tsis random mating?

Video: Yuav ua li cas yog ib qho piv txwv ntawm tsis random mating?

Video: Yuav ua li cas yog ib qho piv txwv ntawm tsis random mating?
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Tsis sib haum xeeb . Yog tias cov tib neeg tsis sib haum xeeb nrog lwm tus neeg hauv cov pej xeem, piv txwv li lawv xaiv lawv tus khub, kev xaiv tuaj yeem ua rau muaj kev hloov pauv hauv cov pej xeem. Ib qho laj thawj yog kev xaiv khub niam txiv yooj yim lossis xaiv kev sib deev; rau piv txwv , poj niam peahens yuav nyiam peacocks nrog loj, ci tails.

Hais txog qhov no, qhov piv txwv ntawm random mating yog dab tsi?

Random Mating . Nyob rau hauv ib tug pej xeem ntawm equlibrium, kev sib tw yuav tsum yog random . Hauv assortative kev sib tw , cov tib neeg nyiam xaiv cov phooj ywg zoo ib yam li lawv tus kheej; rau piv txwv , loj blister beetles nyiam xaiv mates ntawm loj loj thiab me me blister beetles yuav xaiv me me mates.

Tsis tas li ntawd, dab tsi yog qhov tsis sib haum xeeb hauv evolution? Tsis yog - random mating . Hauv tsis yog - random mating , kab mob tej zaum yuav nyiam ua phooj ywg nrog lwm tus ntawm tib genotype los yog sib txawv genotypes. Tsis yog - random mating yuav tsis ua allele frequencies nyob rau hauv cov pej xeem hloov los ntawm nws tus kheej, tab sis nws muaj peev xwm hloov genotype zaus.

Yog li ntawd, dab tsi yog ob qho piv txwv ntawm kev sib tw tsis sib xws?

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.

Dab tsi yog qhov cuam tshuam ntawm nonrandom mating?

Zoo li recombination, tsis random mating tuaj yeem ua raws li cov txheej txheem ntxiv rau kev xaiv ntuj tsim kom muaj kev hloov pauv tshwm sim. Txhua qhov kev tawm mus los ntawm random kev sib tw upsets lub equilibrium faib ntawm genotypes nyob rau hauv ib tug pej xeem. Qhov no yuav tshwm sim txawm tias kev xaiv khub niam txiv yog qhov zoo lossis tsis zoo assortative.

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