Meiosis Questions Key

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Meiosis Questions
iBook- 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 2
1. 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.
b.
c.
d.
telophase, anaphase, metaphase, prophase
metaphase, prophase, anaphase, telophase
prophase, metaphase, anaphase, telophase
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. prophase
b. metaphase
c. anaphase
d. interphase
6. I am the stage of cell division where the cell actually pinches into two cells. What
stage am I?
a. mitosis
b. cytokinesis
c. meiosis
d. osmosis
7.
a.
b.
c.
d.
Prokaryotic cell, including bacteria, divide by a process called
binary fission
mitosis
meiosis
osmosis
8.
a.
b.
c.
d.
e.
Examine the picture of the cell. What phase is it in?
interphase
telophase
anaphase
prophase
metaphase
9. Examine the picture of the cell. What phase is it in?
a. interphase
b. telophase
c. anaphase
d. prophase
e. metaphase
10. Examine the picture of the cell. What phase is it in?
a. Interphase
b. Telophase
c. Anaphase
d. Prophase
e. Metaphase
11. What process is being shown below?
a. osmosis
b. binary fission
c. mitosis
d. meiosis
12. Mitosis is the division of ___________ cells and meiosis is the division of ______
cells.
a. Sex, body
b. Body, sex
c. Plant, animal
d. Animal, plant
13. Which of the following list the stages of the cell cycle in the correct order?
a. mitosis, cytokinesis, interphase
b. interphase, cytokinesis, mitosis
c. 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. Hint
Each chromosome is two chromatids and a tetrad is composed of two chromosomes 8
a. 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 haploid
Abc
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 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
______11. Haploid gametes produced in
males
______12. Haploid gametes produced in
females
______13. Cells produced in females that
do not
participate in reproduction
Product of
Meiosis
a. eggs
b. sperm
c. 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.
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