Determining genotype: pea pod color a botanist has acquired a group of sweet pea plants. all of the plants have yellow pea pods (the recessive trait), except for one, which has green pea pods (the dominant trait). pea pod color is a trait caused by a single gene. in this tutorial, you will determine how the botanist can identify the genotype of the green pea pod, and how this relates to mendel's laws and meiosis. there are two pods of peas- a green one (dominant trait) and a yellow one (recessive trait). part a - identifying the genotype how could the botanist best determine whether the genotype of the green-pod plant is homozygous or heterozygous?