Name: __________________________
Period: __________________________
4th 6 weeks review:
1. Who is considered to be the father of genetics? Why?
2. What do the terms homozygous and heterozygous mean?
3. Identify the following alleles as homozygous dominant, heterozygous, and homozygous
recessive:
a. Aa
b. AA
c. Aa
4. What is the difference between phenotype and genotype?
5. What is the genotypic result when you cross two homozygous offspring together?
6. Cross the following alleles: If A = tall and a= short, what are the phenotypic and genotypic
ratios for each cross?
a. Aa X AA
b. Aa X Aa
c. AA X aa
d. Aa X aa
7. What in incomplete dominance? How do you know if a problem shows incomplete dominance?
8. Sex linked trait problem: If you have a man that is bald (XbY) and a woman who is a carrier for
baldness (XbXB), what are the chances of their sons being bald?
9. Do the following dihybrid cross: AaBB X AAbb
10. What are the chances of getting an organism with the genotype AABb?
11. What is a karyotype? Why are they important?
12. How do you know if something is wrong on a karyotype?
13. What is a pedigree? Know how to read a pedigree.
14. Where did Darwin make most of his observations that would lead to his theory of evolution?
15. Individuals who survive are the ones best adapted for their environment. This statement
explains what theory?
16. What are vestigial structures? Name an example of a vestigial structure.
17. In what type of selection is it better to be “average” in a population?
18. What is taxonomy? Who came up with our current system of naming organisms?
19. What are the eight levels of classification, starting with domain? What is an acronym to
remember these levels? Which level of classification is the most broad? Which is
20. What is the purpose of a dichotomous key? How do you read one?