Question

Give the possible phenotypes and the percentage chance for each in the dihybrid cross between a pea plant that is homozygous in producing smooth, yellow peas and a pea plant that produces wrinkled, green peas. The smooth and yellow alleles are dominant.

Answer 1

The correct answer to this question is: "100% of offspring have SsYy genotype, and smooth, yellow phenotype." The explanation behind this is that given the fact that the parent with smooth, yellow peas is homozygous, htne its genotype is SSYY - expresses both recessive alleles - then it must be a homozygous alleles.