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Section 11-4 Meiosis (pages 275-278)
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Key Concepts
What happens during the process of meiosis?
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How is meiosis different from mitosis?
Introduction (page 275)
1. List the two things that Mendel’s principles of genetics required in order to be true.
a.
b.
Chromosome Number (page 275)
2. What does it mean when two sets of chromosomes are homologous?
3. Circle the letter of each way to describe a diploid cell.
a. 2N
b. Contains two sets of homologous chromosomes
c. Contains a single set of homologous chromosomes
d. A gamete
4. Circle the letter of the number of chromosomes in a haploid Drosophila cell.
a. 8
b. 4
c. 2
d. 0
Phases of Meiosis (pages 275-277)
5. Draw the chromosomes in the diagrams below to show the correct phase of meiosis.
Prophase I
Metaphase I
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Anaphase II
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6. Identify which phase of meiosis is shown in the diagrams below.
7. Why is meiosis described as a process of reduction division?
8. What are the two distinct divisions of meiosis?
a.
b.
9. Is the following sentence true or false? The diploid cell that enters meiosis becomes
4 haploid cells at the end of meiosis.
10. How does a tetrad form in prophase I of meiosis?
11. Circle the number of chromatids in a tetrad.
a. 8
b. 6
c. 4
d. 2
12. What results from the process of crossing-over during prophase I?
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Name
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13. Circle the letter of each sentence that is true about meiosis.
a. During meiosis I, homologous chromosomes separate.
b. The two daughter cells produced by meiosis I still have the two complete sets of
chromosomes, as does a diploid cell.
c. During anaphase II, the paired chromatids separate.
d. After meiosis II, the four daughter cells contain the diploid number of chromosomes.
Gamete Formation (page 278)
Match the products of meiosis with the descriptions.
Product of Meiosis
Description
_____ 14. eggs
_____ 15. sperm
_____ 16. polar bodies
a. Haploid gametes produced in males
b. Haploid gametes produced in females
c. Cells produced in females that do not
participate in reproduction
Comparing Mitosis and Meiosis (page 278)
17. Circle the letter of each sentence that is true about mitosis and meiosis.
a. Mitosis produces four genetically different haploid cells.
b. Meiosis produces two genetically identical diploid cells.
c. Mitosis begins with a diploid cell.
d. Meiosis begins with a diploid cell.
18. Make a Venn diagram to compare and contrast mitosis and meiosis.
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Reviewing Key Concepts
Identifying Processes On the lines provided, order the different stages of
meiosis I and meiosis II in the proper sequence.
_____________ 1. Spindle fibers pull apart homologous chromosomes.
_____________ 2. Four haploid (N) daughter cells form.
_____________ 3. Cells undergo a round of DNA replication.
_____________ 4. Sister chromatids separate from each other.
_____________ 5. Homologous chromosomes form tetrads.
_____________ 6. Two haploid (N) daughter cells form.
_____________ 7. Spindle fibers attach to the homologous
chromosome pairs.
_____________ 8. Individual chromatids move to each end of the cell.
_____________ 9. Crossing-over (if any) occurs.
Short Answer On the lines provided, answer the following questions.
10. Compare the number of cells that result from meiosis and mitosis.
11. How does the genetic content of cells resulting from mitosis and
meiosis differ?
Reviewing Key Skills
12. Comparing and Contrasting Describe a similarity and a difference
between the products of meiosis I and meiosis II.
13. Comparing and Contrasting How is the formation of gametes in males similar to
the formation of gametes in females? How is it different?
14. Applying Concepts If a diploid cell containing 28 chromosomes
undergoes meiosis, how many chromosomes will each daughter cell have?______
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