Question 1

Each of the cells formed after meiosis I are ____.

Accepted Answer

A) diploid 
B) tetraploid 
C) in synapsis 
D) ready to be fertilized 
E) haploid 
A) diploid 
B) tetraploid 
C) in synapsis 
D) ready to be fertilized 
E) haploid E

Question 2

Asexual reproduction is/was evolutionarily advantageous ____.

Accepted Answer

A) for organisms that participate in predator/prey relationships 
B) only on ancient Earth, as it is not currently observed in any animal species 
C) in favorable, unchanging environments 
D) in constantly changing environments 
E) only when organisms can also reproduce sexually 
A) for organisms that participate in predator/prey relationships 
B) only on ancient Earth, as it is not currently observed in any animal species 
C) in favorable, unchanging environments 
D) in constantly changing environments 
E) only when organisms can also reproduce sexually C

Question 3

​Which statement correctly describes chromosome segregation during meiosis?

Accepted Answer

A) ​Each new nucleus contains a different number of chromosomes. 
B) ​Homologous chromosomes separate during anaphase II. 
C) ​Maternal and paternal chromosomes segregate randomly. 
D) ​Two nuclei contain only maternal chromosomes and the other two nuclei contain only paternal chromosomes. 
E) ​Each new nucleus contains the maternal and paternal chromosome for each homologous pair. 
A) ​Each new nucleus contains a different number of chromosomes. 
B) ​Homologous chromosomes separate during anaphase II. 
C) ​Maternal and paternal chromosomes segregate randomly. 
D) ​Two nuclei contain only maternal chromosomes and the other two nuclei contain only paternal chromosomes. 
E) ​Each new nucleus contains the maternal and paternal chromosome for each homologous pair. C

Question 4

Match each term with the correct description.
-telophase II

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 5

If a diploid organism has a genome consisting of 4 chromosomes, it can produce ____ different combinations of chromosomes through meiosis (disregarding crossing over).

Accepted Answer

A) 4 
B) 8 
C) 12 
D) 16 
E) 64 
A) 4 
B) 8 
C) 12 
D) 16 
E) 64

Question 6

Genes for specific traits (e.g., hair color) are located at specific spots on a chromosome. Is it possible for a maternal allele for blonde hair to be switched to the paternal chromosome of the homologous pair during meiosis?

Accepted Answer

Yes, genes on maternal and pat

Question 7

If a parent cell of a certain organism has 16 chromosomes and undergoes meiosis, the resulting cells will have ____ chromosomes.

Accepted Answer

A) 64 
B) 32 
C) 16 
D) 8 
E) 4 
A) 64 
B) 32 
C) 16 
D) 8 
E) 4

Question 8

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

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 9

Match each term with the correct description.
-prophase I

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 10

-The cell in the diagram below is in anaphase I, not anaphase II. How do we know this?

Accepted Answer

The sister

Question 11

Crossing over occurs in ____.

Accepted Answer

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

Question 12

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 II?

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 13

Which situation is most probable at a metaphase I alignment?

Accepted Answer

A) All maternal chromosomes are on the same side. 
B) All paternal chromosomes are on the same side. 
C) Each side has a mixture of maternal and paternal chromosomes. 
D) Each side consists of half paternal and half maternal chromosomes. 
E) All of these are equally probable. 
A) All maternal chromosomes are on the same side. 
B) All paternal chromosomes are on the same side. 
C) Each side has a mixture of maternal and paternal chromosomes. 
D) Each side consists of half paternal and half maternal chromosomes. 
E) All of these are equally probable.

Question 14

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.
-metaphase II?

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 15

What is one of the very important differences between mitosis and meiosis?

Accepted Answer

A) Chromosomes align midway between spindle poles only in meiosis. 
B) Homologous chromosomes pair up and exchange genetic material only in meiosis. 
C) DNA is replicated only before mitosis. 
D) Sister chromatids separate only in meiosis. 
E) Interphase occurs only before mitosis. 
A) Chromosomes align midway between spindle poles only in meiosis. 
B) Homologous chromosomes pair up and exchange genetic material only in meiosis. 
C) DNA is replicated only before mitosis. 
D) Sister chromatids separate only in meiosis. 
E) Interphase occurs only before mitosis.

Question 16

Gamete formation ____.

Accepted Answer

A) is the result of the process of mitosis 
B) involves the pairing of nonhomologous chromosomes 
C) gives rise to eggs or sperm in animals 
D) involves the formation of the zygote 
E) is a process that occurs only in asexually reproducing organisms 
A) is the result of the process of mitosis 
B) involves the pairing of nonhomologous chromosomes 
C) gives rise to eggs or sperm in animals 
D) involves the formation of the zygote 
E) is a process that occurs only in asexually reproducing organisms

Question 17

​Explain the relationship between germ cells and gametes for both plants and animals.

Accepted Answer

In multicelled eukaryotes, gametes arise

Question 18

Match each term with the correct description.
-metaphase II

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 19

-Identify the locations in the accompanying figure where sperm are produced.

Accepted Answer

A) A only 
B) B only 
C) C only 
D) B and D 
E) A and C 
A) A only 
B) B only 
C) C only 
D) B and D 
E) A and C

Question 20

The main evolutionary advantage of sexual over asexual reproduction is that sexual reproduction produces _____.

Accepted Answer

A) more offspring per individual 
B) more variation among offspring 
C) identical offspring 
D) offspring in a method that requires less energy from the parents 
E) more specialized offspring 
A) more offspring per individual 
B) more variation among offspring 
C) identical offspring 
D) offspring in a method that requires less energy from the parents 
E) more specialized offspring

Exam 12: Meiosis and Sexual Reproduction

Each of the cells formed after meiosis I are ____.

Asexual reproduction is/was evolutionarily advantageous ____.

​Which statement correctly describes chromosome segregation during meiosis?

Match each term with the correct description. -telophase II

If a diploid organism has a genome consisting of 4 chromosomes, it can produce ____ different combinations of chromosomes through meiosis (disregarding crossing over).

Genes for specific traits (e.g., hair color) are located at specific spots on a chromosome. Is it possible for a maternal allele for blonde hair to be switched to the paternal chromosome of the homologous pair during meiosis?

If a parent cell of a certain organism has 16 chromosomes and undergoes meiosis, the resulting cells will have ____ chromosomes.

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

Match each term with the correct description. -prophase I

-The cell in the diagram below is in anaphase I, not anaphase II. How do we know this?

Crossing over occurs in ____.

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 II?

Which situation is most probable at a metaphase I alignment?

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. -metaphase II?

What is one of the very important differences between mitosis and meiosis?

Gamete formation ____.

​Explain the relationship between germ cells and gametes for both plants and animals.

Match each term with the correct description. -metaphase II

-Identify the locations in the accompanying figure where sperm are produced.

The main evolutionary advantage of sexual over asexual reproduction is that sexual reproduction produces _____.

The Science of Biology

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Filters

Which statement correctly describes chromosome segregation during meiosis?

Explain the relationship between germ cells and gametes for both plants and animals.