Video: Puas yog Cystic Fibrosis homozygous recessive?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Ib tug neeg yog homozygous (ff) rau cov rov ua dua allele yuav tsim cystic fibrosis . Lub caij nyoog ntawm lawv tsim ib tug me nyuam nrog cystic fibrosis yog 1 ntawm 4, lossis 25%. Piv txwv ob, tsuas yog ib tus niam txiv (leej txiv) muaj daim ntawv theej ntawm qis dua allele. Tsis muaj txoj hauv kev uas lawv tsim ib tus menyuam nrog cystic fibrosis.
Tsis tas li ntawd, puas yog cystic fibrosis recessive lossis tseem ceeb?
Cystic fibrosis (CF) yog autosomal rov ua dua tsis meej pem. Nov yog hom kab mob koj tsuas tuaj yeem tau txais qub txeeg qub teg yog tias ob leeg ntawm koj niam thiab txiv tau txhawb nqa ib daim ntawv theej rov ua dua noob (hauv qhov no, CFTR kev hloov pauv). Los ntawm kev txhais, a qis dua noob yog ib qho uas tuaj yeem npog los ntawm a tseem ceeb noob.
Tsis tas li, dab tsi yog qhov qub txeeg qub teg ntawm cystic fibrosis? CF yog tau txais qub txeeg qub teg nyob rau hauv ib tug autosomal recessive yam. Nws yog tshwm sim los ntawm kev muaj kev hloov pauv hauv ob daim ntawv theej ntawm cov noob rau cystic fibrosis transmembrane conductance regulator (CFTR) protein. Cov uas muaj ib daim ntawv luam ua haujlwm yog cov nqa khoom thiab feem ntau noj qab nyob zoo.
Ua li no, yog vim li cas cystic fibrosis tshwm sim los ntawm recessive allele?
Cystic fibrosis yog ua los ntawm kev hloov pauv hauv cov noob uas ua rau cystic fibrosis transmembrane conductance regulator (CFTR) protein. Cystic fibrosis yog ib qho piv txwv ntawm a qis dua kab mob. Qhov ntawd txhais tau tias ib tus neeg yuav tsum muaj kev hloov pauv hauv ob daim qauv ntawm CFTR noob kom muaj CF.
Muaj pes tsawg alleles muaj rau cystic fibrosis noob?
Dhau qhov feem ntau kev hloov pauv , DeltaF508, suav txog li 70% ntawm CF chromosomes thoob ntiaj teb, ntau dua 850 mutant alleles tau qhia rau lub CF noob neej Kev Ntsuam Xyuas Consortium.
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