A mouse is heterozygous at four different gene loci, with a genotype of AaBbCcDd. For each gene locus, the upper case letter represents the dominant allele and the lower case letter represents the recessive allele. These four allele pairs follow Mendel's principle of independent assortment. Knowing this, and assuming normal segregation of alleles during meiosis, complete the sentences with the correct terms.

In sexual reproducing animals once fertilization of the egg takes place, the exists as a single cell until cell division begins. a) egg b) larva c) sperm d) zygote

What are genotypes? what are phenotypes?

Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offspring. an incomplete dominance cross is performed between a bird that is homozygous for red feathers and a bird that is homozygous for blue feathers. purple offspring result. then, two of the purple offspring are crossed. according to the punnett square for this cross, how many of the offspring from the second cross will have a feather color that results from incomplete dominance? 1 in 4 2 in 4 3 in 4 4 in 4