What should the student add to stage 3 to complete the model? A. Add chromosomes unraveling to small, thin strands.
B. Add chromosomes exchanging information for increased variety.
C. Add chromosomes pairs being pulled toward opposite poles of the cell.
D. Add a plate in the midline of the cell to show two new cells forming.

The diagram shows the results when two parents are crossed. the letters represent alleles for a trait that is controlled by three different genes. which best describes this inheritance pattern? multiple allele because a trait is controlled by three different genes polygenic because the offspring have alleles from both parents multiple allele because the offspring have alleles from both parents polygenic because a trait is controlled by three different genes