Q1. Mrs. April Masal, a 69-year-old woman, is brought to her doctor by her. Medical history elicits the facts that she lost her husband 6 months previously, has been extremely depressed, and is taking sleeping pills and not eating. What is the possibility of scineal disease?

Q2. A black guinea pig crossed with an albino guinea pig produce 12 black offspring. While the albino was crossed with a second black animal, 6 blacks and 6 albinos were obtained. What is the best justification for this genetic situation?