Meiosis QuestionsiBook- pp. 353- 382

1. What are three types of asexual reproduction? (Binary fission, budding, fragmentation).

2. Define gamete and zygote. What number of chromosomes does each have? (A zygote is a diploid cell; it has twice the number of chromosomes as a gamete).

3. What happens during fertilization? (The process in which two gametes unite is called fertilization).

4. Outline the phases of meiosis (Interphase, Meiosis I, Meiosis II).

5. What is a life cycle? (The series of life stages and events that a sexually reproducing organism goes through).

6. What is gametogenesis, and when does it occur? (The development of haploid cells into gametes: sperm and eggs).

7. Create a diagram to show how crossing- over occurs and how it creates new gene combinations on each chromosome (The exchange of genetic material between homologous chromosomes).

8. Compare and contrast asexual and sexual reproduction (Asexual reproduction involves one parent and produces offspring that a genetically identical to each other and to the parent. Sexual reproduction involves two parents and produces offspring that are genetically unique.)

9. Explain why sexual reproduction results in genetically unique offspring.

10. Explain how meiosis I differs from mitosis.

Cell Test 21. Mitosis produces _____ cells during each cell division (2).

2. Meiosis produces ______ cells during each cell division (4).

3. The division of sex cells is - mitosis - meiosis - osmosis - facilitated diffusion.

4. Put the phases of mitosis in order.

a. telophase, anaphase, metaphase, prophaseb. metaphase, prophase, anaphase, telophasec. prophase, metaphase, anaphase, telophase d. telophase, prophase, anaphase, metaphase

5. During which stage of the cell cycle does the cell grown, the DNA replicates, and the organelles are copied?

a. prophaseb. metaphasec. anaphased. interphase

6. I am the stage of cell division where the cell actually pinches into two cells. What stage am I?

a. mitosisb. cytokinesis c. meiosisd. osmosis

7. Prokaryotic cell, including bacteria, divide by a process calleda. binary fission b. mitosisc. meiosisd. osmosis

8. Examine the picture of the cell. What phase is it in?a. interphaseb. telophase c. anaphased. prophasee. metaphase

9. Examine the picture of the cell. What phase is it in?a. interphaseb. telophasec. anaphase d. prophasee. metaphase

10. Examine the picture of the cell. What phase is it in?a. Interphaseb. Telophasec. Anaphased. Prophase e. Metaphase

11. What process is being shown below?a. osmosisb. binary fissionc. mitosisd. meiosis

12. Mitosis is the division of ___________ cells and meiosis is the division of ______ cells.

a. Sex, bodyb. Body, sex c. Plant, animald. Animal, plant

13. Which of the following list the stages of the cell cycle in the correct order?a. mitosis, cytokinesis, interphaseb. interphase, cytokinesis, mitosisc. interphase, mitosis, cytokinesis d. cytokinesis, mitosis, interphase

Digital Textbook (Mitosis and Meiosis, p. 16)

1. What does it mean when two sets of chromosomes are homologous? They code for varying alleles for the same traits, one from each parent.

___ 2. Write the letter or letters that describe a diploid cell in the blank to the left. 2N Why? It is because diploid cells have 2 sets of chromosomes, designated 2N.a. 2N b. Contains two sets of homologous chromosomes c. Contains a single set of homologous chromosomes d. A gamete   ___3 If a Drosophila cell has a diploid number of 8, what is its haploid number? Hint Haploid is one-half of the diploid number. So, the answer would be 4.a. 8 b. 4 c. 2

d. 0   4. Why is meiosis described as a process of reduction division?  Meiosis divides chromosome number and reduces it by half.

5. What are the two distinct stages of meiosis? The two stages are Meiosis I and Meiosis II  6. Is the following sentence true or false? The diploid cell that enters meiosis becomes 4 haploid cells at the end of meiosis.  TRUE! Hint--Meiosis results in four haploid cells.  7. How does a tetrad form in prophase I of meiosis? Homologous chromosomes move together and attach at their centromeres.  ___ 8. Write the number of chromatids in a tetrad in the blank to the left. HintEach chromosome is two chromatids and a tetrad is composed of two chromosomes 8a. 8 b. 6 c. 4 d. 2  

9. What is the result of the process of crossing-over during prophase I? Crossing over exchanges alleles and allows for genetic variation in offspring.  ___  10. Write the letter of each sentence that is true about meiosis in the blank to the left. Hint--After meiosis II daughter cells are haploidA b ca. During meiosis I, homologous chromosomes separate. b. The two daughter cells produced by meiosis I still have the two complete sets of chromosomes as a diploid cell does. c. During anaphase II, the paired chromatids separate. d. After meiosis II, the four daughter cells contain the diploid number of chromosomes.    Gamete Formation Match the products of meiosis with the descriptions. b c a

Description Product of Meiosis

______11. Haploid gametes produced in males ______12. Haploid gametes produced in females ______13. Cells produced in females that do not  participate in reproduction

a. eggs b. spermc. polar bodies

  Comparing Mitosis and Meiosis ___     14. Write the letter of each sentence that is true about mitosis and meiosis in the blank to the left. c d 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.