This 9:3:3:1 phenotypic piv yog qhov piv txwv ntawm Mendelian classic rau tus ntoo khaub lig dihybrid uas cov alleles ntawm ob hom noob sib txawv ntawm nws tus kheej rau hauv gametes.
Nyob rau hauv qhov piv txwv ntawm niam txiv phenotypes yuav tshwm sim hauv F2 tiam ntawm dihybrid hla?
Phenotypic ratio ntawm F2 tiam nyob rau hauv dihybrid cross yog - 9:3:3:1 Hauv cov neeg no 9:1 yog niam txiv ua ke thaum 3:3 yog recombination. Yog li qhov piv ntawm recombinants yog 3: 3 lossis 1: 1Hauv F2 tiam- Hloov thiab daj (9/16) & wrinkled thiab ntsuab (1/16) yog niam txiv genotype.
Cov niam txiv nyob hauv tus ntoo khaub lig yog dab tsi?
Nyob rau hauv tus ntoo khaub lig dihybrid, niam txiv kab mob muaj ntau khub ntawm alleles rau txhua qhov zoo uas tau kawm. Ib tug niam txiv muaj homozygous dominant alleles thiab lwm tus muaj homozygous recessive alleles.
Yuav ua li cas muaj ntau yam sib xyaw ua ke hauv tus ntoo khaub lig dihybrid?
Vim txhua tus niam txiv muaj plaub qhov sib txawv ntawm cov alleles hauv gametes, muaj kaum rau kev sib xyaw ua ke rau tus ntoo khaub lig no.
Dab tsi yog qhov piv ntawm niam txiv hom thiab recombinant hom F2 Dihybrid ntawm dihybrid hla?
Nyob rau hauv f2 tiam ntawm dihybrid cross piv ntawm niam txiv thiab recombinant phenotypic piv ua ke yog 1:2::2:1.
