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Week 9, Session 2
Chapter 13: Meiosis
Supplemental Instruction
Iowa State University
Kelsey
Bio 211 (5)
Dr. Holscher
10-20-09
1. ___________________ is the transmission of traits from one generation to the next.
2. What is the term for the specific location on a chromosome where a gene is found?
3. What are homologs? (What do they have in common?)
4. An ____________________ is any chromosome that is not a sex chromosome.
5. What does the letter n represent (in terms of chromosomes)?
6. Somatic cells have _____ autosomes and _____ pair(s) of autosomes.
7. Somatic cells have _____ sex chromosomes and _____ pair(s) of sex chromosomes.
8. Reproductive cells have _____ autosomes and _____ sex chromosome(s).
9. What is the product of meiosis?
10. What occurs during Meiosis I? Meiosis II?
11. List the three mechanisms for variation in meiosis:
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12. What causes independent assortment of chromosomes?
13. Calculate the number of possible daughter cell combinations for the given values of n
(remember: 2n).
 n= 1
 n=2
 n=3
 n=4
 2n=4
 2n=8
14. How many possible combinations of daughter cells are there in humans (written in 2n format)?
15. What is the function of crossing over? What is produced?
16. Due to random fertilization, how many different sperm-egg chromosome combinations are
possible in the zygote? (Write in 2nx2n format).