Video: Puas muaj tseeb yug me nyuam txhais tau tias homozygous?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Muaj tseeb yug me nyuam . A muaj tseeb yug me nyuam yog hom yug me nyuam nyob rau hauv cov niam txiv yuav tsim cov xeeb ntxwv uas yuav nqa tib phenotype. Qhov no txhais tau tias yog niam txiv homozygous rau txhua qhov zoo. Rau qhov no tshwm sim cov niam txiv yog homozygous rau qhov zoo-uas txhais tau tias cov niam txiv yuav tsum yog ob leeg tseem ceeb los yog ob qho tib si recessive.
Kuj nug, puas yog kev yug me nyuam ntshiab txhais tau tias homozygous?
1 Teb. Yog lawv " dawb huv - yug me nyuam ", tias txhais tau tias tias lawv yog homozygous . Yog hais tias lawv yog heterozygous, cov xeeb ntxwv yuav tsis tag nrho cov xim ib yam li cov niam txiv. Mas tsob ntoo- yug me nyuam " txhais tau tias lawv tag nrho ua.
Kuj Paub, dab tsi yog qhov tseeb yug tsiaj? A muaj tseeb - yug me nyuam kab mob, qee zaum kuj hu ua purebred, yog ib yam kab mob uas ib txwm dhau los ntawm qee yam phenotypic (xws li lub cev qhia qhov zoo) rau nws cov xeeb ntxwv ntawm ntau tiam neeg. Nyob rau hauv ib tug purebred mob los yog yug , lub hom phiaj yog lub cev yuav " yug muaj tseeb "rau yug -Txoj kev muaj feem cuam tshuam.
Raws li txoj cai, puas yog cog qoob loo tiag tiag homozygous?
A muaj tseeb - cog qoob loo yog ib qho uas, thaum nws tus kheej fertilized, tsuas yog tsim cov xeeb ntxwv nrog tib yam. Muaj tseeb - yug me nyuam Cov kab mob yog cov caj ces zoo tib yam thiab muaj cov alleles zoo tib yam rau cov yam ntxwv tshwj xeeb. Muaj tseeb - cog qoob loo thiab cov kab mob tuaj yeem nthuav tawm cov phenotypes uas yog homozygous dominant lub homozygous rov ua dua.
Qhov txawv ntawm kev yug me nyuam ntshiab thiab kev yug me nyuam tiag tiag yog dab tsi?
Muaj tseeb yug me nyuam txhais tau hais tias cov niam txiv kuj yuav dhau los ua ib qho phenotypic zoo rau lawv cov xeeb ntxwv. Muaj tseeb bred kab mob yuav muaj ib dawb huv genotype (genetic qhia ntawm ib tug zoo) thiab yuav tsuas tsim ib tug tej yam phenotype. Muaj tseeb bred qee zaum kuj hu ua ntshiab bred.
Pom zoo:
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