Answer:
The answer is all green plants.
Step-by-step explanation:
Since the alleles are heterozygous, it means it consists of different alleles which would mean there would be one dominant and recessive allele, (G,g). Whenever there is a dominant allele with a recessive allele, the outcome is expected to be the dominant allele. Therefore, in this problem the a cross between to heterozygous plants would be expected to produce all green plants.