Crossing over actually occurs in

 If one parent is heterozygous for type A blood, and the other parent is heterozygous for type B blood, the probability of producing a child with type O blood is

When one gene influences or modifies the phenotypic expression of another gene, such as with coat color in Laborador retrievers (i.e. one gene codes for pigment deposition, the other gene controls how much), those genes are said to be

When tumor cells move from one part of the body and initiate abnormal growth in anotherpart of the body, the new tumor cells are called

When Mendel allowed the F1 generation to self-fertilize, the offspring in the F2 generation were

When two or more genes are carried together during crossing over in meiosis, such that one phenotype is usually associated with another (e.g. eye color and wing length in fruit flies), those genes are said to be

Prokaryotes (bacteria and archaea) reproduce new cells by

Gregor Mendel examined seven characteristics of pea plants, including flower color. When he crossed pure-breeding purple flowers with pure-breeding white flowers, the first generation of offspring (F1)

Mendel proposed that each parent contributes one copy of a “factor” (gene).  Different copies, or alternate forms of the same gene (e.g. B, b) are called

With regard to ploidy number, the letter/variable n is