Dab tsi yog qhov sib txawv ntawm cov alleles ntawm cov tib neeg hauv cov pej xeem hu ua?
Dab tsi yog qhov sib txawv ntawm cov alleles ntawm cov tib neeg hauv cov pej xeem hu ua?
Anonim

Lub Collective Pawg ntawm Alleles hauv a Cov pejxeem Yog Nws Gene Pool. Cov pejxeem geneticists kawm txog qhov txawv ntawm qhov tshwm sim ntawm cov gene hauv a pej xeem . Kev sau ntawm tag nrho cov noob thiab ntau hom kev hloov pauv lossis allelic ntawm cov noob hauv ib qho pej xeem yog hu ua nws gene pas.

Yog li ntawd, dab tsi yog ib pawg ntawm alleles hu ua?

Ib tus neeg lub genotype rau cov gene yog tus set ntawm alleles nws tshwm sim muaj. Nyob rau hauv ib tug diploid kab mob, ib tug uas muaj ob daim ntawv luam ntawm txhua chromosome, ob alleles ua kom tus neeg lub genotype. Lub cev muaj ob yam sib txawv alleles ntawm gene yog hu ua heterozygous.

Kuj Paub, ob yam tseem ceeb ntawm kev hloov caj ces yog dab tsi? Muaj peb qhov chaw ntawm kev hloov pauv caj ces: kev hloov pauv, noob ntws, thiab kev sib deev . Kev hloov pauv tsuas yog hloov pauv hauv DNA. Kev hloov pauv lawv tus kheej tsis tshua muaj tshwm sim thiab feem ntau ua rau muaj kev phom sij rau tib neeg. Vim li no, kev hloov pauv feem ntau yog xaiv tawm tsam los ntawm cov txheej txheem evolutionary.

Kuj paub, ua li cas cov tib neeg nyob rau hauv ib tug pej xeem piv rau ib leeg genetic?

Cov noob caj noob ces variations yog tus sib txawv hauv DNA ntu lossis cov noob ntawm cov neeg thiab txhua Kev hloov pauv ntawm cov noob hu ua allele. Piv txwv li, a pej xeem nrog ntau txawv alleles ntawm ib qho chaw chromosome muaj ntau npaum li cas caj ces kev hloov pauv. Cov noob caj noob ces variation yog tshwm sim los ntawm: mutation.

Allele sizes yog dab tsi?

Versions ntawm DNA ib theem zuj zus los yog ib tug noob hu ua alleles ”. Vim hais tias txhua tus neeg muaj ob ntawm txhua hom chromosome, ib qho tau txais los ntawm niam txiv, txhua tus muaj ob alleles ntawm txhua qhov chaw. Ob tug no alleles qee zaum zoo tib yam (homozygous), tab sis feem ntau lawv tsis zoo ib yam qhov loj (heterozygous).

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