Which of the following best represents the combination of alleles contained INSIDE each of the boxes of a Punnett square?
a. The alleles for a gene in two copies of the same chromosome in the zygote
b. The alleles for a gene in a possible zygote (formed by combining two gametes)
c. The alleles for a gene in a possible gamete produced by one parent
d. The alleles for a gene in an offspring's phenotype
e. The alleles for a gene in the parents' somatic cells