Discussion Guide Chapter 10
Mader, 10th Edition
1.
Compare haploid and diploid numbers. Include the definition and examples.
2. Explain why the chromosome number must be halved during the sexual reproduction
process.
3. Label and describe the parts of a homologous chromosome pair.
4. How does chromosome sorting in meiosis I differ from mitosis?
5. All but the most primitive species of organisms have the ability to reproduce
sexually. Compare sexual and asexual reproduction.
6. Describe the important of crossing-over bringing about genetic variation.
7. Describe how independent assortment brings about genetic variation.
8. How does fertilization add to variation among offspring?
9. Why are meiosis and sexual reproduction important in responding to the changing
environment?
10. What events occur during each phase of mitosis and meiosis?
Interphase
Prophase
Metaphase
Anaphase
Mitosis
Meiosis I
Meiosis II
G1- cell growth
S – DNA
duplication
G2 – cell
growth,
proofreading
Duplicated
chromosomes,
each with two
sister
chromatids line
up
independently
on the
metaphase
plate
Telophase &
Cytokinesis
11. Fill in the chart to summarize the major similarities and differences in the two
types of cell division (mitosis vs. meiosis). For example: For the similarities, include
the event(s) that always happen in prophase, no matter which of the cell division
cycles you’re describing.
Interphase
Prophase
Metaphase
Anaphase
Telophase &
Cytokinesis
a. What
similarities do
you see?
a. What
differences do
you see?
12. How is meiosis II more similar to mitosis than to meiosis I? How does it differ?
13. If the parent cell has 24 chromosomes, the daughter cells following mitosis will have
_____ chromosomes and following meiosis will have ___________ chromosomes.
14. Meiosis in males is a part of ________________, and meiosis in females is part of
______________.
15. Oogenesis will not go to completion unless ____________________ occurs.
16. In humans, meiosis produces _____________________, and in plants, meiosis
produces _____________________.
17. During oogenesis, the primary oocyte has the _________________ and the
secondary oocyte has the ________________ number of chromosomes.
18. How does aneuploidy occur? Why is it more common with sex chromosomes than
autosomes?
19. Complete the chart to compare the types of aneuploidy.
Describe
Examples
Monosomy
Trisomy
20. Complete the chart to compare the four changes in chromosome structure and the
syndromes each can cause.
Describe
Syndrome
Deletion
Duplication
Translocation
Inversion