Question 1

Match the following stages with the corresponding chromosome number in human cells.
-zygote

Accepted Answer

A) 23, haploid 
B) 23, diploid 
C) 46, haploid 
D) 46, diploid 
A) 23, haploid 
B) 23, diploid 
C) 46, haploid 
D) 46, diploid

Question 2

The stage of meiosis that makes descendant cells haploid is ____.

Accepted Answer

A) prophase I 
B) prophase II 
C) anaphase I 
D) anaphase II 
E) metaphase I 
A) prophase I 
B) prophase II 
C) anaphase I 
D) anaphase II 
E) metaphase I

Question 3

Which reproductive strategy would allow the most rapid adaptation to a changing environment?

Accepted Answer

A) asexual reproduction 
B) sexual reproduction 
C) simultaneous sexual and asexual reproduction 
D) switching between sexual and asexual reproduction 
E) all of these strategies are equally adaptive 
A) asexual reproduction 
B) sexual reproduction 
C) simultaneous sexual and asexual reproduction 
D) switching between sexual and asexual reproduction 
E) all of these strategies are equally adaptive

Question 4

Crossing over is one of the most important events in meiosis because ____.

Accepted Answer

A) it produces new combinations of alleles on chromosomes 
B) homologous chromosomes must be separated into different daughter cells 
C) the number of chromosomes allotted to each daughter cell must be halved 
D) homologous chromatids must be separated into different daughter cells 
E) it decreases genetic diversity 
A) it produces new combinations of alleles on chromosomes 
B) homologous chromosomes must be separated into different daughter cells 
C) the number of chromosomes allotted to each daughter cell must be halved 
D) homologous chromatids must be separated into different daughter cells 
E) it decreases genetic diversity

Question 5

Use the accompanying figure to match the cells in the figure to the correct phase in meiosis. The top figure panel is phases of meiosis I; the bottom panel is phases of meiosis II.
-telophase I?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E
F)F
G)G
H)H 
A) A 
B) B 
C) C 
D) D 
E) E
F)F
G)G
H)H

Question 6

Use the accompanying figure to match the cells in the figure to the correct phase in meiosis. The top figure panel is phases of meiosis I; the bottom panel is phases of meiosis II.
-anaphase I

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E
F)F
G)G
H)H 
A) A 
B) B 
C) C 
D) D 
E) E
F)F
G)G
H)H

Question 7

Match each term with the correct description.
-interphase

Accepted Answer

A) DNA duplication occurs in this phase. 
B) Homologous chromosomes condense, pair up, and swap segments. 
C) Homologous chromosome pairs align on the equator. 
D) Sister chromatids separate and move to opposite poles. 
E) A nuclear envelope forms around each set of chromosomes to produce four haploid (n) nuclei.
F)Homologous chromosomes separate and move to opposite poles.
G)As in mitosis, duplicated chromosomes align on the equator.
H)Two nuclei formed; each has a complete set of chromosomes.
I)Spindle formation in two cells. 
A) DNA duplication occurs in this phase. 
B) Homologous chromosomes condense, pair up, and swap segments. 
C) Homologous chromosome pairs align on the equator. 
D) Sister chromatids separate and move to opposite poles. 
E) A nuclear envelope forms around each set of chromosomes to produce four haploid (n) nuclei.
F)Homologous chromosomes separate and move to opposite poles.
G)As in mitosis, duplicated chromosomes align on the equator.
H)Two nuclei formed; each has a complete set of chromosomes.
I)Spindle formation in two cells.

Question 8

Crossing over mixes up ____.

Accepted Answer

A) alleles on nonhomologous chromosomes 
B) alleles on homologous chromosomes 
C) zygotes 
D) chromosome number 
E) sister chromatids 
A) alleles on nonhomologous chromosomes 
B) alleles on homologous chromosomes 
C) zygotes 
D) chromosome number 
E) sister chromatids

Question 9

Match the following stages with the corresponding chromosome number in human cells.
-daughter cell after mitosis

Accepted Answer

A) 23, haploid 
B) 23, diploid 
C) 46, haploid 
D) 46, diploid 
A) 23, haploid 
B) 23, diploid 
C) 46, haploid 
D) 46, diploid

Question 10

Sexual reproduction ____.

Accepted Answer

A) leads to uniform characteristics in a population 
B) results in new combinations of genetic traits 
C) produces genetic clones 
D) requires less tissue differentiation than asexual reproduction 
E) only requires mitosis 
A) leads to uniform characteristics in a population 
B) results in new combinations of genetic traits 
C) produces genetic clones 
D) requires less tissue differentiation than asexual reproduction 
E) only requires mitosis

Question 11

Meiosis ____ the parental chromosome number.

Accepted Answer

A) doubles 
B) halves 
C) maintains 
D) mixes up 
E) quadruples 
A) doubles 
B) halves 
C) maintains 
D) mixes up 
E) quadruples

Question 12

If meiosis did not occur in sexually reproducing organisms, ____.

Accepted Answer

A) the zygote would be haploid 
B) gametes would be haploid 
C) mitosis would be sufficient 
D) the chromosome number would double in each generation 
E) eggs would be diploid but sperm would be haploid 
A) the zygote would be haploid 
B) gametes would be haploid 
C) mitosis would be sufficient 
D) the chromosome number would double in each generation 
E) eggs would be diploid but sperm would be haploid

Question 13

Match the following stages with the corresponding chromosome number in human cells.
-daughter cell after meiosis II

Accepted Answer

A) 23, haploid 
B) 23, diploid 
C) 46, haploid 
D) 46, diploid 
A) 23, haploid 
B) 23, diploid 
C) 46, haploid 
D) 46, diploid

Question 14

Which cell type contains only one set of chromosomes?

Accepted Answer

A) zygote 
B) somatic cells 
C) gamete 
D) diploid 
E) skin cells 
A) zygote 
B) somatic cells 
C) gamete 
D) diploid 
E) skin cells

Question 15

The process of crossing over ____.

Accepted Answer

A) generally results in binary fission 
B) involves nucleoli 
C) involves breakages and exchanges being made between sister chromatids 
D) involves breakages and exchanges being made between homologous chromosomes 
E) involves random assortment of homologues during metaphase 
A) generally results in binary fission 
B) involves nucleoli 
C) involves breakages and exchanges being made between sister chromatids 
D) involves breakages and exchanges being made between homologous chromosomes 
E) involves random assortment of homologues during metaphase

Question 16

Use the accompanying figure to match the cells in the figure to the correct phase in meiosis. The top figure panel is phases of meiosis I; the bottom panel is phases of meiosis II.
-prophase I

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E
F)F
G)G
H)H 
A) A 
B) B 
C) C 
D) D 
E) E
F)F
G)G
H)H

Question 17

What adaptation have the freshwater bdelloid rotifers used to allow them to acquire genetic diversity while reproducing only via asexual reproduction?

Accepted Answer

These rotifers can import genes from bac

Question 18

How do the products of meiosis differ from those of mitosis?

Accepted Answer

By mitosis and cytoplasmic division, one

Question 19

Homologous chromosomes separate during ____.

Accepted Answer

A) anaphase I 
B) anaphase II 
C) metaphase I 
D) metaphase II 
E) telophase II 
A) anaphase I 
B) anaphase II 
C) metaphase I 
D) metaphase II 
E) telophase II

Question 20

In asexual reproduction, new combinations of genes arise by ____.

Accepted Answer

A) mutation 
B) random segregation of chromosomes into gametes 
C) random assortment of gametes 
D) crossing over 
E) random mating 
A) mutation 
B) random segregation of chromosomes into gametes 
C) random assortment of gametes 
D) crossing over 
E) random mating

Exam 12: Meiosis and Sexual Reproduction

Match the following stages with the corresponding chromosome number in human cells. -zygote

The stage of meiosis that makes descendant cells haploid is ____.

Which reproductive strategy would allow the most rapid adaptation to a changing environment?

Crossing over is one of the most important events in meiosis because ____.

Use the accompanying figure to match the cells in the figure to the correct phase in meiosis. The top figure panel is phases of meiosis I; the bottom panel is phases of meiosis II. -telophase I?

Use the accompanying figure to match the cells in the figure to the correct phase in meiosis. The top figure panel is phases of meiosis I; the bottom panel is phases of meiosis II. -anaphase I

Match each term with the correct description. -interphase

Crossing over mixes up ____.

Match the following stages with the corresponding chromosome number in human cells. -daughter cell after mitosis

Sexual reproduction ____.

Meiosis ____ the parental chromosome number.

If meiosis did not occur in sexually reproducing organisms, ____.

Match the following stages with the corresponding chromosome number in human cells. -daughter cell after meiosis II

Which cell type contains only one set of chromosomes?

The process of crossing over ____.

Use the accompanying figure to match the cells in the figure to the correct phase in meiosis. The top figure panel is phases of meiosis I; the bottom panel is phases of meiosis II. -prophase I

What adaptation have the freshwater bdelloid rotifers used to allow them to acquire genetic diversity while reproducing only via asexual reproduction?

How do the products of meiosis differ from those of mitosis?

Homologous chromosomes separate during ____.

In asexual reproduction, new combinations of genes arise by ____.

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