Dab tsi yog allele frequencies thiab xav tau genotype zaus?
Dab tsi yog allele frequencies thiab xav tau genotype zaus?

Video: Dab tsi yog allele frequencies thiab xav tau genotype zaus?

Video: Dab tsi yog allele frequencies thiab xav tau genotype zaus?
Video: 3.8.2 Modal Auxiliary Verbs- Can and Could 2024, Kaum ib hlis
Anonim

allele zaus nyob rau hauv ib tug pej xeem yuav tsis hloov ntawm tiam mus rau tiam. yog tias allele zaus nyob rau hauv cov pej xeem nrog ob alleles ntawm qhov chaw yog p thiab q, ces tus xav tau genotype zaus yog p2,,2 q,ua2.

Nyob rau hauv no hais txog, yuav ua li cas koj nrhiav tau genotype zaus los ntawm allele zaus?

Hauv kev sib npaug ,ua p2 sawv cev rau zaus ntawm homozygous genotype aw, q2 sawv cev rau zaus ntawm homozygous genotype aa, thiab 2pq sawv cev rau zaus ntawm heterozygous genotype Aa. Tsis tas li ntawd, qhov sum ntawm cov allele zaus rau txhua tus alleles ntawm qhov chaw yuav tsum yog 1, yog li p + q = 1.

Ib tug kuj yuav nug, koj ua li cas txiav txim siab genotype zaus hauv Hardy Weinberg equilibrium? Rau txiav txim yog tias peb cov neeg peas yog nyob ntawm Hardy - Weinberg equilibrium , peb yuav tsum ntsaws peb qhov tseem ceeb ntawm p thiab q rau hauv kab zauv saum toj no thiab pom yog cov no genotype zaus phim cov uas peb pib xam. Yog cov pejxeem nyob hauv Hardy - Weinberg equilibrium , cov genotype zaus yuav tsum yog 0.49 AA, 0.42 Aa, thiab.

Kuj nug, dab tsi yog qhov xav tau genotype zaus?

Cov xav tau genotype zaus . Teb: Zoo, AA = p2 = (0.355)2 = 0,126; Aa = 2(p)(q) = 2(0.355)(0.645) = 0.458; thiab thaum kawg aa = q2 = (0.645)2 = 0.416 (koj twb paub qhov no los ntawm ntu A saum toj no). Tus naj npawb ntawm cov neeg heterozygous uas koj yuav kwv yees yuav nyob hauv cov neeg no.

Dab tsi yog qhov txawv ntawm genotype thiab allele frequencies?

Cov allele zaus yog txawv ntawm cov genotype zaus , txawm tias lawv muaj feem cuam tshuam, thiab allele zaus tuaj yeem xam los ntawm genotype zaus . Hauv cov noob caj noob ces, allele zaus yog siv los piav txog qhov sib txawv ntawm ib qho chaw tshwj xeeb lossis hla ntau loci.

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