Thaum kawg, lub genotype ntawm ib yam kab mob nrog ob lub recessive alleles hu ua homozygous recessive. Hauv qhov muag xim piv txwv, qhov genotype no tau sau bb. Ntawm peb genotypes no, tsuas yog bb, homozygous recessive genotype, yuav tsim ib qho phenotype ntawm ob lub qhov muag xiav.
Puas qhov muag xim yog phenotype lossis genotype?
Cov xim pom qhov muag yog koj qhov phenotype, tab sis nws tsis qhia peb tsis muaj dab tsi txog koj genotype. Ntau yam noob caj noob ces cuam tshuam qhov muag xim ntawm tib neeg, thiab ib qho ntawm lawv tuaj yeem pom qhov tseem ceeb lossis qhov tsis zoo hauv koj qhov phenotype - uas yog, qhov ntxoov ntxoo tshwj xeeb ntawm xim av hauv koj ob lub qhov muag.
Puas qhov muag xiav yog noob?
Kev tshawb fawb tshiab qhia tias cov neeg qhov muag xiav muaj ib leeg, ib txwm poj koob yawm txwv. Cov kws tshawb fawb tau taug qab qhov kev hloov pauv caj ces uas tshwm sim 6,000-10,000 xyoo dhau los thiab yog qhov ua rau lub qhov muag xim ntawm txhua tus neeg lub qhov muag xiav uas muaj sia nyob hauv ntiaj teb niaj hnub no.
qhov muag xim twg yog qhov tsawg tshaj plaws?
Green yog xim qhov muag tsawg tshaj plaws ntawm cov xim ntau dua. Tawm ntawm ob peb qhov tshwj xeeb, ze li txhua tus neeg muaj qhov muag xim av, xiav, ntsuab lossis qhov chaw nyob nruab nrab. Lwm cov xim xws li grey lossis hazel tsis tshua muaj.
Puas qhov muag xiav los ntawm kev yug me nyuam?
Txawm li cas los xij, gene rau qhov muag xiav yog qhov tsis zooyog li koj yuav xav tau ob leeg kom tau qhov muag xiav. Qhov no yog ib qho tseem ceeb raws li qee yam kev tsis haum xeeb hauv lub cev thiab cov kab mob caj ces, xws li cystic fibrosis, yog nqa los ntawm recessive alleles. Inbreeding stacks qhov txawv ntawm yug nrog tej yam kev mob tawm tsam koj.
