SSC MTS EXAM

Detailed explanation-1: -The round seeds are dominant and wrinkled seeds are recessive. Thus, in the first filial generation (F1), when the homozygous round (RR) is crossed with homozygous wrinkled (rr), then the resulting offspring is produced with a genotype Rr which is heterozygous dominant genotype.

Detailed explanation-2: -Now here, as we can notice that all the offsprings are the phenotype of all offsprings is round and yellow because the alleles for round and yellow are dominant over alleles for wrinkled and green, and therefore There is 0% probability of wrinkled and yellow seeds.

Detailed explanation-3: -Based on this observation round seeds is the dominant phenotype. With dominant being round seeds that would mean wrinkle seeds are the recessive trait. Therefore a cross of heterozygous for round with a homozygous recessive for wrinkled, will yield an F1 generation that has 50% round seeds and 50% wrinkle seeds.