Title: 013368718X_CH11_159-178.indd
Author: G4_Dual142_1
Last saved by: Bertolotti, Janine
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Name 	   Class 	    Date 	

Cell Division Practice Questions
For Questions 1–8, write True if the statement is true. If the statement is false, change the underlined word to make the statement true.
	    1.  The offspring of two parents obtains a single copy of every gene from each parent.
	    2.  A gamete must contain one complete set of genes. 
	    3.  Genes are located at specific positions on spindles.
	    4.  If an organism’s haploid number is 6, its diploid number is 3.
	    5.  One member of each homologous chromosome pair comes from each gene.
	    6.  A cell that contains both sets of homologous chromosomes is haploid.
	    7.  The gametes of sexually reproducing organisms are haploid. 

Phases of Meiosis
On the lines provided, identify the stage of meiosis I or meiosis II in which the event described occurs.
	    9.  Each replicated chromosome pairs with its corresponding homologous chromosome.
	  10.  Crossing-over occurs between tetrads.
	  11.  Paired homologous chromosomes line up across the center of the cell.
	  12.  Spindle fibers pull each homologous chromosome pair toward an opposite end of the cell.
	  13.  A nuclear membrane forms around each cluster of chromosomes and cytokinesis follows, forming two new cells.
	  14.  Chromosomes consist of two chromatids, but they do not pair to form tetrads.
	  15.  A nuclear membrane forms around each cluster of chromosomes and cytokinesis follows, forming four new cells.

THINK VISUALLY

16.		Draw two homologous pairs of chromosomes (in different colors if you have them) in these diagrams to illustrate what happens during these three phases of meiosis.

17.	Identify which phase of meiosis is shown in the diagrams below.

Comparing Meiosis and Mitosis
18. Complete the table to compare meiosis and mitosis.

| Mitosis | Meiosis
Form of reproduction | |
Number of daughter cells | |
Change in chromosome number | |
Number of cell divisions | |
Difference in alleles between parent cell and daughter cells | |

For Questions 22–27, complete each statement by writing the correct word or words.
22. A diploid cell that enters mitosis with 16 chromosomes will divide to produce 	daughter cells. Each of these daughter cells will have	 chromosomes.
23. If the diploid number of chromosomes for an organism is 16, each daughter cell after mitosis will contain 	 chromosomes.
24. A diploid cell that enters meiosis with 16 chromosomes will pass through 	 cell divisions, producing 	 daughter cells, each with 	 chromosomes.
25. Gametes have a 	 number of chromosomes.
26. If an organism’s haploid number is 5, its diploid number is 	.
27. While a haploid number of chromosomes may be even or odd, a diploid number is always 	.
28. Describe a similarity and a difference between the products of meiosis I and meiosis II.
29. How is the formation of gametes in males similar to the formation of gametes in females? How is it different?
30. If a diploid cell containing 28 chromosomes undergoes meiosis, how many chromosomes will each daughter cell have?
31. How do crossover events during meiosis benefit organisms?
32. Complete the following chart that compares/contrasts mitosis and meiosis.

| Mitosis | Meiosis
Function | |
Location in body | |
Number of daughter cells | |
Change in chromosome number | |
Number of phases | |
Number of cell divisions | |
Difference in DNA between parent cell and daughter cells | |

33. Read each statement, and then on the line write down the phase of mitosis or meiosis that the
action occurs. IF the action occurs in both, write both. The first one is done for you.

1. metaphase I meiosis___	homologous chromosome line up in the center of the cell
2 ____________________________________   The individual chromosomes move apart.
3.____________________________________   spindle fibers pull homologous pairs to ends of the cell
4. _______________________________________ 4 haploid (N) daughter cells form
5. _______________________________________ cells undergo a round of DNA replication
6. _______________________________________ The chromosomes line up across the middle of the cell.
7. _______________________________________ Chromosomes become visible.
8.________________________________________ sister chromatids separate from each other
9. _______________________________________ 2 haploid (N) daughter cells form
10. ______________________________________ Sister chromatids separate into individual chromosomes.
11. ______________________________________ Nuclear envelope re-forms.
12._______________________________________ spindle fibers attach to the homologous chromosome pairs
13. ______________________________________ individual chromatids move to each end of the cell
14. ______________________________________ The nucleolus disappears and the nuclear envelope beaks down.
15. ______________________________________ Each chromosome is connected to a spindle fiber.
16._______________________________________ crossing-over (if any) occurs

34. MULTIPLE CHOICE:
1. During which phase of the meiotic cell cycle does DNA replication occur?
a. interphase	b. prophase	c. metaphase		d. anaphase	e. telophase
2. When does crossover take place in meiosis?
a. interphase	b. prophase	c. metaphase		d. anaphase	e. telophase
3. During which phase of meiosis does the nuclear membrane reform around chromosomes?
a. interphase	b. prophase I	c. metaphase II		d. anaphase I	e. telophase II
4. A human cell containing 22 autosomes and a Y chromosome is...
a. a somatic cell of a male	b. a zygote	c. a somatic cell of a female	
d. a sperm cell			e. an ovum
5. Homologous chromosomes move towards opposite poles of a dividing cell during...
a. mitosis	b. meiosis I		c. meiosis II	     d. fertilization	
e. binary fission
6. Meiosis II is similar to mitosis in that...
a. homologous chromosomes synapse	      b. DNA replicates before the division
c. the daughter cells are diploid	      d. sister chromatids separate during anaphase
e. the chromosome number is reduced
7. Metaphase of meiosis I and meiosis II differ in that...
a. chromosomes line up at the equator	
b. homologues line up in meiosis I and duplicated chromosomes line up in meiosis II
c. sister chromatids line up in meiosis I and chromosomes line up in meiosis II
d. there are the same number of chromosomes
8. Asexually reproducing organisms produce offspring that are genetically identical to each other and to the parents. What type of cell division are the offspring a product of?
a. mitosis	b. meiosis		c. binary fission	d. fertilization
9. At which stage of meiosis do chromatids separate and become daughter chromosomes?
a. metaphase I		b. anaphase I		c. metaphase II		d. anaphase II
e. telophase II
10. The process in which haploid gametes are formed in diploid organisms is called:
a. cytokinesis		b. interphase		c. meiosis		d. mitosis
e. nuclear division
11. Which of the following correctly ranks nucleic acid structures in order of size, from smallest to largest?
a. chromosome, nucleotide, gene, codon	b. nucleotide, codon, gene, chromosome
c. chromosome, gene, codon, nucleotide	d. codon, nucleotide, chromosome gene
12. A human cell containing 44 autosomes and two X chromosomes is...
a. a somatic cell of a male		b. a zygote	     c. a somatic cell of a female
d. a sperm cell				e. an ovum
13. Independent assortment is one of the factors that contributes to genetic diversity. Independent
assortment is associated with which stage of meiosis?
a. anaphase I		b. prophase I		c. metaphase I		d. anaphase II
e. metaphase II
14. The fertilized egg (zygote) of a human contains how many chromosomes?
a. 1		b. 22		c. 46		d. 23		e. 48
15. Which cells of the human body are made through the process of meiosis?
a. gametes	b. somatic cells		c. all cells of the body	   d. X and Y chromosomes
e. autosomes
16. A _____________ is the complete set of chromosomes of an organism, arranged and
displayed in pairs and ordered by size. (Select the BEST answer.)
a. genome		b. karyotype		c. nucleus
d. heredity		e. gene
17. Which 2 cells would be more genetically similar to each other?
a. two gametes produced by the same person	
b. two somatic cells produced by the same person
c. two eggs produced by the same woman
d. two sperm produced by the same man
18. If a diploid organism has a genome consisting of 22 chromosomes, its gametes will have
_____ chromosomes.
a. 44		b. 11		c. 22		d. 88		e. 19
19. When does DNA replication occur during meiosis?
a. interphase I		b. prophase I		c. interphase II
d. prophase II		e. interphase I and II
20. The term 'synapsis' is associated with which process?
a. crossing over		b. independent assortment		c. mitosis
d. anaphase			e. fertilization
21. What are homologous chromosomes?
A.	Two chromosomes with differing sets of genes, in the same sequence, with the same alleles
B.	Two chromosomes with the same set of genes, in a different sequence, with the same alleles
C.	Two chromosomes with a different set of genes, in the same sequence, with different alleles
D.	Two chromosomes with the same set of genes, in the same sequence, sometimes with different alleles
22. If the amount of DNA in a haploid gamete is represented by ´, what is the net quantity of DNA in a cell from the same organism at the start of meiosis?
			a. 0.5 X			b. x			c. 2x			d. 4x
23. A cell with a diploid number of 12 chromosomes undergoes meiosis. What will be the product at the end of meiosis?
A.	2 cells each with 12 chromosomes		B. 4 cells each with 6 chromosomes
C.	2 cells each with 6 chromosomes	     	D. 4 cells each with 12 chromosomes

24. A diploid cell in a gorilla has 48 chromosomes. How many chromosomes will be present in a haploid gorilla cell?
	a. 96		b. 48		c. 24		d.12
25. A cell with a diploid number of 12 chromosomes undergoes meiosis. What will be the product at the end of meiosis?
	a. 2 cells each with 12 chromosomes		b. 4 cells each with 6 chromosomes
	c. 2 cells each with 6 chromosomes		d. 4 cells each with 12 chromosomes

26. The diagram below shows a cell undergoing meiosis. What is this stage of meiosis?
	a. Anaphase I	     b. Prophase I		c. Anaphase II		d. Telophase II