7. A male and female bison that are both heterozygous for normal skin pigmentation (Aa) produce an ?

When you cross a male and a female who are both heterozygous you have a 50% chance of getting an offspring his also has the normal pigmentation trait (Aa), 25% chance of getting a zygous dominant normal offspring (AA), and 25% chance of a zygous recessive offspring (aa). Either the question is incomplete or the answers are incomplete, but the only answer that makes sense if any is C. Because crossing over occurs in most organism matings. When chromosomes pair up their DNA is exchanged and therefore the offspring receive DNA from both of the parents.