Nws yog ua los ntawm ib qho tseem ceeb ntawm cov noob. Qhov no txhais tau tias nws tuaj yeem kis tau los ntawm ib qho allele los ntawm ib tus niam txiv yog tias lawv muaj qhov tsis zoo. Ib tug neeg uas yog homozygous (PP) lossis heterozygous (Pp) rau cov tseem ceeb allele yuav tsim Polydactyly.
Vim li cas polydactyly yog qhov tseem ceeb tab sis tsis pom?
Txawm hais tias tus allele muaj ntau lossis tsawg hauv cov pejxeem tsis nyob ntawm seb tus allele puas tseem ceeb lossis rov ua dua. Dominance tshwm sim thaum ib qho allele npog qhov phenotype ntawm lwm tus allele. Nyob rau hauv cov ntaub ntawv ntawm polydactyly, ib qho allele tuaj yeem ua tsis tshua muaj thaum qhov tshwm sim phenotype tsis yog qhov zoo rau cov kab mob
Puas yog polydactyly dominant?
Polydactyly yog ib qho txawv txav uas txawv ntawm cov ntiv tes lossis ntiv taw ntxiv. Tus mob yuav tshwm sim raws li ib feem ntawm kev sau ntawm qhov txawv txav, lossis nws tuaj yeem muaj nyob ntawm nws tus kheej. Thaum polydactyly nthuav tawm los ntawm nws tus kheej, nws tau txais txiaj ntsig raws li an autosomal dominant trait.
Dab tsi ua rau tus cwj pwm muaj zog?
Dominant yog hais txog kev sib raug zoo ntawm ob hom ntawm cov noob. Cov tib neeg tau txais ob hom ntawm txhua tus noob, hu ua alleles, los ntawm txhua tus niam txiv. Yog hais tias tus alleles ntawm ib tug noob txawv, ib tug allele yuav qhia; nws yog tus thawj gene. Cov nyhuv ntawm lwm cov allele, hu ua recessive, yog masked.
Dab tsi yog qhov ua rau caj ces ntawm polydactyly?
Polydactyly kuj tseem tuaj yeem cuam tshuam nrog cov kab mob caj ces lossis tus mob, uas txhais tau tias nws yuav dhau mus nrog rau cov kab mob caj ces. Yog tias polydactyly tsis dhau mus, nws tshwm sim vim hloov pauv ntawm tus menyuam cov noob thaum nws tseem nyob hauv plab.
