Compare and contrast mitosis and meiosis. What major event occurs during interphase Trial 1 - Meiotic Beads Diagram:

1.   Compare and contrast mitosis and meiosis.

2.      What major event occurs during interphase

Trial 1 - Meiotic Beads Diagram:

Prophase I

Metaphase I

Anaphase I

Telophase I

Prophase II

Metaphase II

Anaphase II

Telophase II

Cytokinesis

Trial 2 - Meiotic Division Beads Diagram:

Prophase I

Metaphase I

Anaphase I

Telophase I

Prophase II

Metaphase II

Anaphase II

Telophase II

Cytokinesis

Post-Lab Questions

1. In this experiment, how many chromosomes were present when meiosis I started?

1. In this experiment, how many nuclei are present at the end of meiosis II? How many chromosomes are in each?

1.  What is the ploidy of the DNA at the end of meiosis I? What about at the end of meiosis II?

1. How are meiosis I and meiosis II different? List two reasons.

1. Why do you use non-sister chromatids to demonstrate crossing over?

1. What combinations of alleles could result from a crossover between BD and bd chromosomes?

1. Identify two ways that meiosis contributes to genetic recombination.

1. Why is it necessary to reduce the number of chromosomes in gametes, but not in other cells?

1. Blue whales have 44 chromosomes in every cell. Determine how many chromosomes you would expect to find in the following:

Sperm Cell:

Egg Cell:

Daughter Cell from Mitosis:

Daughter Cell from Meiosis II:

1. Research and find a disease that is caused by chromosomal mutations. When does the mutation occur? What chromosomes are affected? What are the consequences?

1. Diagram what would happen if sexual reproduction took place for four generations using diploid (2n) cells.