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major event occurs during interphase?
person, residing in a location where they are exposed to the sun often,
develops a mutation in some of their skin cells resulting in cancer.
Consider whether their offspring will be born with the same mutation. Use
scientific evidence to support your answer.
1: Following Chromosomal DNA Movement through Meiosis
Data Tables and Post-Lab Assessment
Part 1 – Meiotic Division Beads Diagram without Crossing Over
Part 2:Meiotic Division Beads Diagram with Crossing Over
1. What is the ploidy of the
DNA at the end of meiosis I? What about at the end of meiosis II?
2. How are meiosis I and
meiosis II different?
3. Why do you use non-sister
chromatids to demonstrate crossing over?
4. What combinations of
alleles could result from a crossover between BD and bd chromosomes?
5. How many chromosomes were
present when meiosis I started?
6. How many nuclei are present
at the end of meiosis II? How many chromosomes are in each?
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:
Daughter Cell from Meiosis I:
Daughter Cell from Meiosis II:
and find a disease that is caused by chromosomal mutations. When does the
mutation occur? What chromosomes are affected? What are the consequences?
what would happen if sexual reproduction took place for
four generations using diploid (2n) cells.
2: The Importance of Cell Cycle Control
your hypothesis from Step 1 in the Procedure section here.
do your results indicate about cell cycle control?
a person developed a mutation in a somatic cell which diminishes the
performance of the body’s natural cell cycle control proteins. This mutation
resulted in cancer, but was effectively treated with a cocktail of
cancer-fighting techniques. Is it possible for this person’s future children to
inherit this cancer-causing mutation? Be specific when you explain why or why
do cells which lack cell cycle control exhibit karyotypes which look physically
different than cells with normal cell cycle.
are HeLa cells? Why are HeLa cells appropriate for this experiment?