assume an individual has only 1 chromosome. they are diploid, which means they have two copies of this chromosome. what process helps explain why 50% of the gametes produced by an individual with the aa genotype contain the a allele while the other 50% of gametes contain the a allele. select only one answer choice. group of answer choices a: independent assortment of alleles b: segregation of alleles c: punnett squares a and b only