Dab tsi yog variation ntawm cov nroj tsuag?
Dab tsi yog variation ntawm cov nroj tsuag?

Video: Dab tsi yog variation ntawm cov nroj tsuag?

Video: Dab tsi yog variation ntawm cov nroj tsuag?
Video: yog hmoov dab tsi. Zoo Xyooj (cover) 2024, Kaum ib hlis
Anonim

Ntuj variation nyob rau hauv cov nroj tsuag hais txog kev sib txawv ntawm ib leeg cog hom tsiaj qus. Ntuj kev hloov pauv yog ib qho tseem ceeb ntawm cov txiaj ntsig zoo rau cog yug me nyuam.

Tsis tas li ntawd, dab tsi yog kev hloov pauv caj ces hauv cov nroj tsuag?

Genetic variation hais txog qhov sib txawv ntawm cov caj ces pleev ntawm cov tib neeg hauv cov neeg. Genetic variation yog qhov tsim nyog hauv kev xaiv ntuj. Hauv kev xaiv ntuj, cov kab mob nrog ib puag ncig xaiv qhov zoo dua tuaj yeem hloov mus rau ib puag ncig thiab dhau ntawm lawv noob.

Qhov thib ob, 2 hom kev hloov pauv yog dab tsi? Hom Variation Variation nyob rau hauv ib hom yog tsis tshua muaj, tab sis yeej muaj ob hom loj ntawm kev hloov pauv nyob rau hauv ib hom: nruam kev hloov pauv thiab tsis txuas ntxiv kev hloov pauv . Tsis tu ncua kev hloov pauv yog qhov txawv hom kev hloov pauv muab faib rau ntawm qhov txuas ntxiv.

Hais txog qhov no, yog vim li cas variation nyob rau hauv cov nroj tsuag?

Cov noob caj noob ces kev hloov pauv yog qhov tseem ceeb rau kev xaiv ntuj vim tias kev xaiv ntuj tsuas tuaj yeem nce lossis txo qhov zaus ntawm alleles uas twb muaj lawm muaj hauv cov pejxeem. Cov noob caj noob ces kev hloov pauv yog tshwm sim los ntawm: mutation. random mating ntawm cov kab mob.

Dab tsi yog variation thiab nws hom?

Hom ntawm variation Variation tuaj yeem yog txuas ntxiv lossis tsis txuas ntxiv. Tsis tu ncua kev hloov pauv piav kev hloov pauv nyob rau hauv uas sib txawv alleles ntawm ib tug noob muaj ib tug loj ntxim rau lub phenotype ntawm lub cev. Tsis tu ncua kev hloov pauv piav kev hloov pauv nyob rau hauv uas ntau alleles muaj me me los ntawm phenotype.

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