determine the possible PHENOTYPES of the offspring when crossing these two parents: GG and gg
G = green skin g = yellow skin
When crossing parents with genotypes GG and gg, the possible phenotypes of the offspring will be determined by the combination of alleles inherited from each parent.
Since GG represents the homozygous dominant genotype and gg represents the homozygous recessive genotype, the offspring will have the genotype Gg. In terms of phenotype, G represents green skin (dominant) and g represents yellow skin (recessive).
Therefore, the possible phenotypes of the offspring will be green skin.