Dab tsi yog qhov ua rau Codominance?
Dab tsi yog qhov ua rau Codominance?

Video: Dab tsi yog qhov ua rau Codominance?

Video: Dab tsi yog qhov ua rau Codominance?
Video: Ua Dab Tsi Txhaum Koj - David Yang (New Song 2021) 2024, Kaum ib hlis
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Qee qhov xwm txheej, cov gene recessive yog qhov qub thiab cov noob tseem ceeb yog qhov tsis zoo. Hauv cov xwm txheej zoo li no, cov noob tseem ceeb tuaj yeem thaiv kev ua haujlwm ntawm cov noob recessive hauv qee txoj kev. Cov no yog cov piv txwv ntawm tag nrho dominance. Codominance yog thaum ob qho tib si proteins tsim ua haujlwm sib txawv, txhua tus muaj lub zog tshwj xeeb.

Hais txog qhov no, vim li cas Codominance tshwm sim?

Codominance tshwm sim thaum ob leeg alleles qhia dominance, xws li nyob rau hauv cov ntaub ntawv ntawm cov ntshav AB (IA KuvB) nyob rau hauv tib neeg. Tsis tas li ntawd, tib neeg ABO cov ntshav sawv cev rau lwm qhov sib txawv ntawm Mendelian kev yooj yim vim tias muaj ntau tshaj li ob qho alleles (A, B, thiab O) rau qhov tshwj xeeb no.

Tsis tas li ntawd, Codominance piv txwv yog dab tsi? Thaum ob lub alleles rau ib qho kev zoo sib npaug sib npaug nrog tsis yog recessive los yog dominant, nws tsim codominance . Piv txwv ntawm codominance suav nrog tus neeg muaj ntshav hom AB, uas txhais tau hais tias ob qho tib si A allele thiab B allele tau qhia sib npaug.

Tib neeg kuj nug, Codominance yog dab tsi?

Codominance yog ib qho kev sib raug zoo ntawm ob lub gene. Cov tib neeg tau txais ib qho qauv ntawm cov noob, hu ua allele, los ntawm txhua tus niam txiv. Yog tias cov alleles txawv, qhov tseem ceeb ntawm allele feem ntau yuav qhia, thaum cov nyhuv ntawm lwm cov allele, hu ua recessive, yog npog.

Hom ntshav li cas piv txwv ntawm Codominance?

Kev sib xyaw ntawm alleles zoo, txawm li cas los xij, alleles tuaj yeem yog tus thawj tswj hwm -i.e., ob leeg tsis ua raws li qhov tseem ceeb los yog recessive. Ib piv txwv yog tib neeg ABO ntshav qhov system; cov neeg nrog hom AB ntshav muaj ib qho allele rau A thiab ib qho rau B. (Cov neeg uas tsis yog hom O.) Saib kuj dominance; kev tsis txaus ntseeg.

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