Cov txheej txheem:

Yuav ua li cas yog ib qho piv txwv ntawm codominant qub txeeg qub teg nyob rau hauv tib neeg?
Yuav ua li cas yog ib qho piv txwv ntawm codominant qub txeeg qub teg nyob rau hauv tib neeg?

Video: Yuav ua li cas yog ib qho piv txwv ntawm codominant qub txeeg qub teg nyob rau hauv tib neeg?

Video: Yuav ua li cas yog ib qho piv txwv ntawm codominant qub txeeg qub teg nyob rau hauv tib neeg?
Video: 6 Nqi Lus Qhia Kev Ua neej ( leej twg mloog lub neej yuav zoo tuaj) 2024, Kaum ib hlis
Anonim

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.

Ntawm no, dab tsi yog cov piv txwv ntawm codominant traits?

Piv txwv ntawm Codominance:

  • AB Blood Type. Cov neeg uas muaj hom ntshav no muaj cov protein A thiab B tib lub sijhawm.
  • Sickle Cell Anemia. Sickle cell anemia yog kab mob uas cov qe ntshav liab ua nyias thiab ncab tawm.
  • Nees xim. Roan tsho tiv no xim ntawm ib tug nees yog vim codominance.
  • Paj xim.

Ib yam li ntawd, tus kab mob codominant yog dab tsi? Kev loj hlob thiab caj ces Kab mob kev cai yog hais txog qhov kev qhia ntawm polymorphic alleles uas ua rau lub phenotype tshiab. Piv txwv li, cov noob encoding ABH cov ntshav pab pawg qhia tus thawj tswj hwm qub txeeg qub teg.

Kuj tseem yuav paub yog, vim li cas mob kab mob ntshav qab zib yog ib qho piv txwv ntawm codominant qub txeeg qub teg?

Ua li no, allele yog tus thawj tswj hwm , txij li ob qho tib si zoo li qub thiab mob mob tau pom hauv cov ntshav. Tab sis cov allele qee zaum kuj zoo li recessive thiab. Lub misshapen hlwb tshwm sim los ntawm kab mob cell allele tsis tuaj yeem nqa cov pa oxygen kom zoo uas tuaj yeem ua rau ntshav ntshav.

Codominant txhais li cas hauv cov noob caj noob ces?

Codominance tshwm sim thaum ob versions, los yog "alleles," ntawm tib lub noob muaj nyob rau hauv ib tug muaj sia nyob, thiab ob qho tib si qhia. Hloov ntawm ib qho kev coj ua tseem ceeb tshaj lwm tus, ob qho tib si tshwm sim. A thiab B alleles rau hom ntshav tuaj yeem qhia tau tib lub sijhawm, ua rau hom AB ntshav.

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