Name _____________________________
Mendelian Genetics – www.bozemanscience.com
Date ________________
1. What is Gregor Mendel famous for?
2. What is the P cross? F1?
3. When Mendel crossed purple pea plants with white pea plants, what did he get?
4. When he crossed the F1 offspring together, what did he get? What was the ratio?
5. What was his conclusion from this experiment?
6. What does it mean to be a “hybrid”?
7. What does a Punnett Square tell you?
8. What is an allele?
9. Explain the two laws of Mendel. a. Law of Segregation b. Law of Independent Assortment

Work through the following problems BEFORE you get his answers.
10. A coin is flipped four times and comes up heads each time. What is the probability that the next coin will come up heads?
11. Classify the following as heterozygous or homozygous:
What does heterozygous mean?
What does homozygous mean? a. RR b. Rr c. yy d. YyRR
12. What is the phenotype of the following:
What does phenotype mean? a. Yy b. Rr c. yy d. YyRR

13. What is the probability of Rr x Rr producing wrinkled seeds? Round (R) is dominant to wrinkled (r) and yellow (Y) is dominant to green (y).
14. What is the probability of Yy x yy producing green seeds?
15. What is the probability of RrYy x RRYy would produce RrYy?
16. How does Mr. Anderson go about calculating the #15? (What is his trick?) What does he call it?
17. What is Huntington’s disease? What symptoms does it have? What is the problem?
18. Is Huntington’s disease dominant or recessive?

19. What is a pedigree? What does a square represent? Circle?
20. How is Huntington’s disease an ethical issue?