Download Chap 9 Study Guide 1-9

Chapter 9: Study Guide Assignment
Name:
Section 1 (pages 173-178)
1. Give an example of the difference between genes and alleles using a human trait. (You can be
creative here).
2. Who is considered the “father of Genetics”?
3. Using You, Your parents, and your grandparents, explain which is the P1, F1, and F2 generations.
4. Give an example of a pure trait in Dalmatians.
5. What is the difference between a dominant trait and a recessive one?
6. How many alleles do we have for each trait (think about chromosomes and
how they are arranged)?
7. During gamete formation, the two alleles for a trait separate from one another. The gamete may end
up with either of the two alleles. Which one of Mendel’s two laws does this describe?
8. What does a capital letter represent?
9. What does a lowercase letter represent?
Section 2: (pages 180-186)
10. Using your own example, explain the difference between a gene and an allele.
11. Explain the difference between a genotype and a phenotype using your own example.
12. If you have a dominant allele “A” which causes tallness, and a recessive allele “a” which causes
shortness, would you expect to see more people that are tall or more that are short? Explain why.
13. If you are tall, you can either be homozygous tall or heterozygous tall. What is the difference?
14. What is the expected probability of getting heads if you toss a coin 6 times. How many heads should
you get if you toss it 50 times? 100 times?
15. Does probability tell you exactly how many times something will happen? If not, what does it tell
you?
16. What is incomplete dominance? Give an example.
17. What is the difference between monohybrid and dihybrid crosses. Is the picture shown below an
example of a monohybrid or dihybrid cross?
18. Explain how codominance is different than incomplete dominance.
19. In the pictures below, which one represents codominance and which one
shows incomplete dominance?