Koj puas tuaj yeem muaj ntau dua 2 alleles rau cov noob?
Koj puas tuaj yeem muaj ntau dua 2 alleles rau cov noob?

Video: Koj puas tuaj yeem muaj ntau dua 2 alleles rau cov noob?

Video: Koj puas tuaj yeem muaj ntau dua 2 alleles rau cov noob?
Video: Dab neeg Vauv tsis haum niam tais 2/6/2017 2024, Kaum ib hlis
Anonim

Txawm tias muaj ib tus neeg feem ntau tsuas muaj ob alleles rau gene , ntau dua ob alleles tau muaj nyob rau hauv cov pejxeem noob pas dej ua ke. Theoretically, txhua lub hauv paus hloov yuav tshwm sim nyob rau hauv ib tug tshiab allele . Qhov tseeb, nyob rau hauv tib neeg cov pejxeem, tej zaum yuav muaj kev nyab xeeb hais tias feem ntau tib neeg noob muaj ntau tshaj ob alleles.

Raws li txoj cai, ib lub noob puas tuaj yeem muaj ntau dua ob lub alleles?

Txawm hais tias tib neeg tib neeg (thiab tag nrho cov kab mob diploid) ua tau nkaus xwb muaj ob tug alleles rau ib tug muab noob , ntau alleles tej zaum yuav muaj nyob rau hauv cov pej xeem theem xws li muaj ntau ua ke ntawm ob alleles raug soj ntsuam. Cov variant yuav yog recessive los yog dominant rau cov qus-hom allele.

Tsis tas li ntawd, nws txhais li cas thaum lub noob muaj ntau yam alleles? Txhais thiab piv txwv Nrog ntau yam alleles , uas txhais tau tias muaj ntau tshaj ob phenotypes muaj nyob ntawm qhov tseem ceeb los yog recessive alleles uas muaj nyob rau hauv tus cwj pwm thiab dominance qauv tus neeg alleles ua raws li thaum ua ke.

Tom qab ntawd, ib tug kuj yuav nug, pes tsawg alleles muaj peev xwm muaj?

ob

Dab tsi zoo yog tswj los ntawm cov noob nrog ntau cov alleles?

A kev tswj hwm los ntawm ib noob tab sis ntau alleles yog hom ntshav. Muaj 4 phenotypes: A, B, AB, O. Hom A thiab B yog codominant, thiab O yog rov ua dua rau A thiab B. Tsis muaj leej twg yog tus tseem ceeb.

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