diploidy pab tau li cas los khaws cov caj ces txawv? Nws tso cai rau recessive alleles uas tej zaum yuav tsis nyiam nyob rau hauv ib puag ncig tam sim no kom khaws cia nyob rau hauv lub gene pas dej ua ke los ntawm propagation ntawm heterozygotes. … Qhov kawg ntawm cov alleles tshiab yog mutations, random hloov nyob rau hauv cov nucleotide sequences ntawm ib tug kab mob DNA.
Yuav ua li cas Overdominance tswj caj ces txawv?
Kev tswj hwm tus kheej ob leeg alleles hauv cov pejxeem kom ua tiav qhov siab tshaj plaws tag nrho rau cov pejxeem (Daim duab 23). Qhov sib npaug zaus nyob ntawm seb qhov tseem ceeb ntawm qhov kev xaiv coefficients, s thiab t, tsis hais qhov pib ntawm allele frequencies. Lub equilibrium ntawm qhov no yog ruaj khov.
hom kab mob li cas tswj caj ces txawv?
Kev hloov pauv caj ces tuaj yeem tshwm sim los ntawm mutation (uas tuaj yeem tsim cov alleles tshiab hauv cov pej xeem), random mating, random fertilization, thiab recombination ntawm homologous chromosomes thaum lub sij hawm meiosis (uas reshuffles alleles nyob rau hauv lub cev xeeb tub).
Puas ntsuas qhov kev xaiv muaj kev hloov pauv caj ces?
Kev xaiv qhov sib npaug piav qhia txog cov txheej txheem ntawm kev hloov pauv uas khaws cov caj ces hloov mus ntev dua li qhov kev xav tau los ntawm qhov tsis sib xwsNws tuaj yeem muaj ntau yam ua rau, suav nrog heterozygous kom zoo dua, kev xaiv tsis zoo zaus-raws li kev xaiv, thiab ib puag ncig heterogeneity nyob rau hauv qhov chaw thiab lub sij hawm.
ua li cas heterozygotes tswj kev hloov pauv hauv cov pejxeem?
Mean kev noj qab haus huv ntawm cov pejxeem (saum toj no) thiab hloov ntau zaus ntawm allele A1 (hauv qab) piv txwv ntawm heterozygote kom zoo dua nrog 2 allis.… Nws txoj kev ruaj ntseg txhais tau hais tias daim ntawv xaiv no tswj kev hloov pauv ntawm cov pej xeem. Qhov kev sib npaug ntawm qhov sib npaug no kuj ua rau cov pej xeem lub cev muaj zog.
