What are all of the possible genotypes of offspring with a cross between a pure homozygous dominant pea plant (GG) with a pure homozygous recessive pea plant (gg)?
A.
GG, Gg, and gg
B.
GG and gg
C.
Gg, only
D.
GG, only
The possible genotypes of offspring with this cross are GG and Gg.
GG represents homozygous dominant offspring with two dominant alleles.
Gg represents heterozygous offspring with one dominant allele and one recessive allele.
There will not be any gg offspring because the dominant allele (G) will always mask the recessive allele (g) in the presence of at least one dominant allele.
Therefore, the correct answer is B. GG and gg.