Short 1. Describe in great detail what happened when Mendel crossed purebred tall plants with
purebred short pea plants through the 2nd generation. Use a Punnett square to help show
the relationship.

Glutamic acid: hydrophilic or hydrophobic? positive, negative, or neutral? valine: hydrophilic or hydrophobic? positive, negative, or neutral?

Melting glaciers is a serious threat to the environment what is the possible consequence of melting glaciers on polar bears?

Match the examples to the correct level of organization. 1. system level roses, snakes, puppies 2. organism level roots, stamens, leaves 3. tissue level bone, cartilage, blood 4. organ level heart, veins, arteries