Meiosis piav qhia Mendel txoj cai ntawm kev cais tawm li cas?
Meiosis piav qhia Mendel txoj cai ntawm kev cais tawm li cas?

Video: Meiosis piav qhia Mendel txoj cai ntawm kev cais tawm li cas?

Video: Meiosis piav qhia Mendel txoj cai ntawm kev cais tawm li cas?
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Hauv essence, lub txoj cai hais tias cov ntawv luam ntawm cov noob cais los yog cais yog li ntawd txhua gamete tau txais tsuas yog ib qho allele. Raws li chromosomes sib cais rau hauv gametes sib txawv thaum lub sijhawm meiosis , ob qhov sib txawv alleles rau ib qho gene kuj cais yog li ntawd txhua gamete tau txais ib qho ntawm ob qho alleles.

Hais txog qhov no, dab tsi ntawm meiosis yog lub luag haujlwm rau Mendel txoj cai ntawm kev cais tawm?

Lub hauv paus ntawm lub cev ntawm Mendel txoj cai ntawm kev cais tawm yog thawj faib ntawm meiosis nyob rau hauv uas homologous chromosomes nrog lawv txawv versions ntawm txhua gene yog cais nyob rau hauv tus ntxhais nuclei.

Kuj Paub, tus ntoo khaub lig Monohybrid qhia txog txoj cai ntawm kev cais tawm li cas? Thaum gametes yog tsim, yam cais thiab yog faib ua units rau txhua gamete. Cov lus no yog feem ntau hu ua Mendel txoj cai ntawm kev cais . Yog hais tias lub cev muaj ob yam tsis zoo li (hu ua alleles) rau ib tug yam ntxwv, ib tug tej zaum yuav qhia rau tag nrho cov exclusion ntawm lwm yam (dominant vs recessive).

Hauv qhov no, theem twg ntawm meiosis yog txoj cai ntawm kev cais tawm?

Meiotic chromosome thiab chromatid kev cais Chromosome kev cais tshwm sim ntawm ob qhov sib cais theem thaum meiosis hu ua anaphase I thiab anaphase II (saib meiosis daim duab). Nyob rau hauv ib lub cell diploid muaj ob pawg ntawm homologous chromosomes ntawm txawv niam txiv keeb kwm (xws li leej txiv thiab leej niam).

Kev sib raug zoo ntawm Mendel txoj cai thiab meiosis yog dab tsi?

Piav qhov kev sib raug zoo ntawm Mendel Txoj Cai ntawm Independent Assortment thiab Meiosis : Meiosis faib cov chromosomes rau hauv pawg ntawm plaub. Txhua tus allele rau ib qho zoo muaj 50% txoj hauv kev ntawm kev kis mus. Tab sis ob qho alleles ua ke ua plaub qhov kev xaiv sib txawv, uas ua rau muaj feem rau cov no tau dhau ntawm 25%.

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