Video: Vim li cas Hardy Weinberg tsis muaj tseeb?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Thaum muaj neeg nyob hauv Hardy - Weinberg equilibrium rau ib tug noob, nws yog tsis yog evolving, thiab allele frequencies yuav nyob twj ywm tib yam thoob plaws tiam. Lawv yog: kev hloov pauv, kev sib txuas tsis sib xws, cov noob ntws, qhov loj ntawm cov pejxeem loj (genetic drift), thiab kev xaiv ntuj.
Tib neeg kuj nug, yog Hardy Weinberg equilibrium ua tau nyob rau hauv xwm Vim li cas los yog vim li cas tsis?
Cov Hardy - Weinberg equilibrium tuaj yeem cuam tshuam los ntawm ntau lub zog, suav nrog kev hloov pauv, ntuj kev xaiv, kev sib txuas tsis sib xws, genetic drift, thiab gene flow. Vim tias tag nrho cov kev cuam tshuam no feem ntau tshwm sim hauv xwm , cov Hardy - Weinberg equilibrium tsis tshua muaj tshwm sim hauv kev muaj tiag.
Kuj Paub, vim li cas random mating tseem ceeb rau Hardy Weinberg? Random mating . Lub HWP hais tias cov pej xeem yuav muaj cov genotypic zaus (hu ua Hardy – Weinberg proportions) tom qab ib tiam ntawm random mating hauv cov pejxeem. Ib qho laj thawj uas tsis yog- random mating yog inbreeding, uas ua rau muaj kev nce hauv homozygosity rau tag nrho cov noob.
Ua li no, vim li cas ho tsis Hardy Weinberg muaj nyob hauv cov neeg tiag?
Thaum a pej xeem yog nyob rau hauv Hardy - Weinberg equilibrium rau ib tug noob, nws tsis yog hloov zuj zus mus, thiab allele frequencies yuav nyob twj ywm tib yam thoob plaws tiam. Lawv yog: kev hloov pauv, tsis yog-random mating, gene flow, finite pej xeem loj (genetic drift), thiab tej yam ntuj tso xaiv.
Vim li cas nws yog 2pq hauv Hardy Weinberg kab zauv?
Hauv kev sib piv, p2 sawv cev rau zaus ntawm homozygous genotype AA, q2 sawv cev rau zaus ntawm homozygous genotype aa, thiab 2pq sawv cev rau zaus ntawm heterozygous genotype Aa. Hauv ntxiv , cov sum ntawm allele frequencies rau tag nrho cov alleles ntawm qhov chaw yuav tsum yog 1, yog li p + q = 1.
Pom zoo:
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