If you crossed two heterozygous yellow-seed pea plants (genotypes Aa), the relative frequency of: A)the a allele in each parent's gametes would be ¹/₂. B)the A allele in each parent's gametes would be ¹/₂. C)green-seed plants (genotype aa)would be ¹/₄. D)homozygous yellow-seed plants (genotype AA)would be ¹/₄. E)All of these choices are correct.

Question

Quizplus · Accepted Answer

Each parent's gametes would have a 50% (1/2) chance of carrying either the A or a allele, making choices A and B correct. The offspring genotype ratios for a cross between two Aa parents follow a Mendelian 3:1 ratio for dominant to recessive phenotypes, making the probability of aa (green-seed plants) 1/4 and AA (homozygous yellow-seed plants) also 1/4, which confirms choices C and D as correct.

If You Crossed Two Heterozygous Yellow-Seed Pea Plants (Genotypes Aa)