A plant has a genotype of SsYy for Seed shape (S=round, s= wrinkled) and seed color. (Y= Yellow y= green.) What allele combinations could this plant have in its gametes? (Hint: what combination of shape and color alleles would their sperm/egg contain?)

Gametes) SY, Sy, sY, sy

Explanation:

Genotype) Ss Yy

Gametes) SY, Sy, sY, sy

When the germ cell suffers meiosis, there are four possible types of daughter cells (gametes)

Chromosome      ---SY

                            ---sy

                           Sy---

                           sY

Genes are diallelic and gametes result from all the possible combinations among the allele types present in the cell. In this example, there are two heterozygous genes.

S combines with Y and y

s combines with Y and y

If it is easier for you, you can make a diagram

S Y >  SY

S y > Sy

s Y > sY

s y > sy