Q1. Think of the beaver's digestive organ system. Describe its overall role. Listing several of the organs in this system, describe how each functions, and outline how the organs work together to carry out the role of an organ system.

Q2. Mendel crossed pea plants that were PP dd (purple flowers and short stems) with pp DD (white flowers and tall stems), and self-pollinated the F1 to obtain an F2. The two loci assort independently. Purple is dominant to white and tall is dominant too short. What quantity of the purple flowered, short stem plants in the F2 are expected to be pure breeding. Illustrate the work.