Chapter 11 – Sexual Reproduction and Meiosis
Chapter 11
Sexual Reproduction and Meiosis
Multiple Choice Questions
1. Edouard van Beneden proposed that an egg and a sperm, each containing half the
complement of chromosomes found in somatic cells, fuse to produce a single cell called a(n)
______.
2. ______ is a process of nuclear division which reduces the number of chromosomes per cell
from 2 sets to 1 set.
Chapter 11 – Sexual Reproduction and Meiosis
3. ______ cells contain one set of chromosomes.
4. In life cycles that alternate between haploid and diploid stages, fertilization doubles the
number of chromosomes per cell while ______ reduces it in half.
5. Homologous chromosomes pair along their length during prophase I of meiosis. While two
homologues are paired, genetic exchange may occur between them in a process called
________.
Chapter 11 – Sexual Reproduction and Meiosis
6. Compared to asexual reproduction, the main advantage of sexual reproduction is that it
7. If there were no suppression of DNA replication between meiotic divisions but cytokinesis
proceeded normally, what is the most likely outcome of meiosis?
8. Evidence of crossing over can often be seen under the light microscope as a structure
called a _______.
Chapter 11 – Sexual Reproduction and Meiosis
9. The fusion of a male gamete with a female gamete is called
10. Diploid organisms use meiosis to produce haploid cells. Meiosis consists of how many
rounds of nuclear division?
11. The pairing of chromosomes along their lengths, which is essential for crossing over, is
referred to as
Chapter 11 – Sexual Reproduction and Meiosis
12. The cell produced by the fusion of an egg and a sperm is the
13. The zygote has
14. All animal cells are diploid except
Chapter 11 – Sexual Reproduction and Meiosis
15. The point of connection between two sister chromatids, before anaphase II of meiosis
separates them, is called the
16. Which of the following produces new cells that are genetically identical to the original
cell?
17. In animals, the cells that will eventually undergo meiosis to produce gametes are set aside
early in development. These are called
Chapter 11 – Sexual Reproduction and Meiosis
18. Which of the following events occurs first during meiosis?
19. Chromosomes exchange genetic information by
20. Crossing over between homologous chromosomes takes place during
Chapter 11 – Sexual Reproduction and Meiosis
21. The synaptonemal complex is
22. At the end of meiosis II, each of the four resulting cells contains
23. Which best describes the process of independent assortment?
Chapter 11 – Sexual Reproduction and Meiosis
24. In plants and animals, the zygote develops by which of the following processes?
25. The pairing of homologous chromosomes is called
Chapter 11 – Sexual Reproduction and Meiosis
26. Which best explains the process of meiosis?
27. During meiosis, sister chromatids are held together by
28. What immediately follows meiosis I?
Chapter 11 – Sexual Reproduction and Meiosis
29. All of the following increase genetic variation EXCEPT
30. One of a pair of chromosomes with similar genetic information and from different
sources like the sperm and egg.
31. Which structures indicate where crossing over has occurred?
Chapter 11 – Sexual Reproduction and Meiosis
32. Which structure holds two homologous chromosomes together?
33. During anaphase I, which best represents segregation of the chromatids that make up one
pair of homologues? (M represents a maternal chromatid and P represents a paternal
chromatid. Assume no crossing over occurs.)
34. You are studying meiosis in an organism where 2n= 28. How many chromosomes will
be present in each cell after meiosis I is complete but before meiosis II begins?
Chapter 11 – Sexual Reproduction and Meiosis
Clarify Question
•
What is the key concept addressed by the question?
•
What type of thinking is required?
•
What key words does the question contain and what do they mean?
Gather Content
•
What do you know about meiosis? How does it relate to the question?
Consider Possibilities
•
What other information is related to the question? Which information is most useful?
Choose Answer
•
Given what you now know, what information and/or problem solving approach is most
likely to produce the correct answer?
Reflect on Process
•
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 11 – Sexual Reproduction and Meiosis
35. You are studying meiosis in an organism where 2n=24. How many chromosomes will
each nucleus have after meiosis II is complete?
Chapter 11 – Sexual Reproduction and Meiosis
Clarify Question
•
What is the key concept addressed by the question?
•
What type of thinking is required?
chromosomes in a cell.
•
What key words does the question contain and what do they mean?
Gather Content
•
What do you know about meiosis? How does it relate to the question?
equator and separate. Then in meiosis II the sister chromatids separate.
Consider Possibilities
•
What other information is related to the question? Which information is most useful?
Choose Answer
•
Given what you now know, what information and/or problem solving approach is most
likely to produce the correct answer?
Reflect on Process
•
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 11 – Sexual Reproduction and Meiosis
36. You are comparing the events of meiosis I in cells from several different organisms. You
come across one species in which you do not observe any chiasmata. The best conclusion to
make is
37. Which statement about the reductive division of meiosis is false?
38. The Rec8 protein holds sister chromatids together during meiosis. If an individual has a
mutation that prevents degradation of Rec8, this would most likely prevent
Chapter 11 – Sexual Reproduction and Meiosis
Clarify Question
•
What is the key concept addressed by the question?
•
What type of thinking is required?
•
What key words does the question contain and what do they mean?
Gather Content
•
What do you know about meiosis? How does it relate to the question?
Consider Possibilities
•
What other information is related to the question? Which information is most useful?
Choose Answer
•
Given what you now know, what information and/or problem solving approach is most
likely to produce the correct answer?
Reflect on Process
•
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 11 – Sexual Reproduction and Meiosis
39. Which of the following is likely to occur if you were to prevent cyclin B from associating
with its cyclin-dependent kinase near the end of meiosis I?
Chapter 11 – Sexual Reproduction and Meiosis
Clarify Question
•
What is the key concept addressed by the question?
•
What type of thinking is required?
•
What key words does the question contain and what do they mean?
cycle. For the cell to progress further, the cyclin needs to be degraded.
Gather Content
•
What do you know about cyclins and cell check points? How does it relate to the
question?
Consider Possibilities
•
What other information is related to the question? Which information is most useful?
Choose Answer
•
Given what you now know, what information and/or problem solving approach is most
likely to produce the correct answer?
Reflect on Process
•
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 11 – Sexual Reproduction and Meiosis
40. Which of the following statements about crossing over is false?
41. A life cycle that regularly alternates between haploid and diploid stages is found in all of
the following EXCEPT