26 Jun Week 9 Lab Report Form Carefully read and study the information
Question
Week 9 Lab Report Form
Carefully read and study the information in the lab, including all videos and activities. Add your
answers to this answer sheet, and attach your lab report according to the directions in the
dropbox. (When naming this document, please put your name first, such as: John_Doe—Week 9
Lab Report)
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Lab – Meiosis
Think about the differences between mitosis and meiosis as you use pop beads to simulate the
stages of meiosis and crossing over.
Questions for Experiment 1: Following chromosomal DNA movement through Meiosis:
1. In this experiment, how many chromosomes were present when meiosis I started?
2. In this experiment, how many nuclei are present at the end of meiosis II? How many
chromosomes are in each?
3. What is the ploidy of the DNA at the end of meiosis I? What about at the end of meiosis II?
4. How are meiosis I and meiosis II different? List two reasons.
5. Why do you use non-sister chromatids to demonstrate crossing over?
6. What combinations of alleles could result from a crossover between BD and bd chromosomes?
7. Identify two ways that meiosis contributes to genetic recombination.
8. Why is it necessary to reduce the number of chromosomes in gametes, but not in other cells?
9. Blue whales have 44 chromosomes in every cell. Determine how many chromosomes you
would expect to find in the following:
a. Sperm Cell:
b. Egg Cell:
c. Daughter Cell from Mitosis:
d. Daughter Cell from Meiosis II:
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