Nws txhais li cas kom muaj ib qho tseem ceeb allele?
Nws txhais li cas kom muaj ib qho tseem ceeb allele?

Video: Nws txhais li cas kom muaj ib qho tseem ceeb allele?

Video: Nws txhais li cas kom muaj ib qho tseem ceeb allele?
Video: Qhov tseem ceeb ntawm kev thov Vajtswv yog dab tsi 1 2024, Kaum ib hlis
Anonim

A dominant allele yog ib variation a noob uas yuav tsim ib tug tej yam phenotype, txawm nyob rau hauv lub xub ntiag ntawm lwm yam alleles . A tseem ceeb allele feem ntau encodes rau cov protein ua haujlwm. Thaum a dominant allele yog kiag li tseem ceeb tshaj lwm tus allele , lwm yog allele lub npe hu ua rov ua dua.

Ib yam li ntawd, ib qho piv txwv ntawm dominant allele yog dab tsi?

Piv txwv ntawm Dominant Cov plaub hau tsaus yog tseem ceeb tshaj cov plaub hau daj los yog liab. Cov plaub hau curly yog tseem ceeb tshaj cov plaub hau ncaj. Baldness yog ib tseem ceeb qhov zoo. Muaj ib tug poj ntsuam lub ncov (ib tug V-puab plaub hau) yog tseem ceeb tshaj muaj ib tug ncaj hairline. Freckles, cleft puab tsaig thiab dimples yog tag nrho piv txwv ntawm a tseem ceeb qhov zoo.

Ib tug kuj yuav nug, dab tsi yog ib qho tseem ceeb allele GCSE? Alleles tej zaum yuav yog tseem ceeb los yog rov ua dua : A tseem ceeb allele yog ib txwm qhia, txawm tias muaj ib daim qauv. Dominant alleles yog sawv cev los ntawm tsab ntawv loj, piv txwv li, A. The allele rau qhov muag xim av yog tseem ceeb . Homozygous alleles yog ob qho tib si rau tib yam ntxwv, piv txwv li AA lossis aa.

Dhau li saum toj no, dab tsi yog dominant thiab recessive allele?

Txog. Thaum ib allele yog tseem ceeb , tus yam ntxwv nws txuas nrog yuav qhia nyob rau hauv ib tug neeg. Thaum ib allele yog rov ua dua , tus yam ntxwv nws txuas nrog yog tsawg dua yuav tsum tau qhia. Rov qab qhov zoo tsuas yog tshwm sim thaum ob qho tib si alleles yog rov ua dua hauv tus kheej.

Qhov tseem ceeb allele zoo li cas?

Alleles tau piav raws li los yog tseem ceeb los yog rov ua dua nyob ntawm lawv cov yam ntxwv sib xws. Piv txwv li, lub allele rau qhov muag xim av yog tseem ceeb , yog li koj tsuas xav tau ib daim qauv ntawm 'qhov muag xim av' allele kom muaj qhov muag xim av (txawm hais tias, nrog ob daim ntawv luam koj tseem yuav muaj qhov muag xim av).

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