In the garden pea, yellow cotyledon color is dominant to green, and inflated pod shape is dominant to the constricted form. considering both of these traits jointly in self- fertilized dihybrids, the progeny appeared in the following numbers: 193 green, inflated 184 yellow constricted 556 yellow, inflated 61 green, constricted do these genes assort independently? support your answer using chi-square analysis.