Question 1

The following picture depicts which of the following changes in chromosome structure.

Accepted Answer

A) deletion 
B) duplication 
C) translocation 
D) aneuploidy 
A) deletion 
B) duplication 
C) translocation 
D) aneuploidy B

Question 2

If a cell contains 12 chromosomes at the end of meiosis I,how many chromosomes will the daughter cells contain at the end of meiosis II?

Accepted Answer

A) 3 
B) 6 
C) 12 
D) 24 
A) 3 
B) 6 
C) 12 
D) 24 C

Question 3

Which of the following statements is true about the life cycle of animals?

Accepted Answer

A) The gametes are the haploid phase of the animals life cycle. 
B) The gametes are the diploid phase of the life cycle. 
C) The products of the haploid phase of the life cycle are larger than those of the diploid phase. 
D) Meiosis is not a necessary component of the animal life cycle. 
A) The gametes are the haploid phase of the animals life cycle. 
B) The gametes are the diploid phase of the life cycle. 
C) The products of the haploid phase of the life cycle are larger than those of the diploid phase. 
D) Meiosis is not a necessary component of the animal life cycle. A

Question 4

During which stage of meiosis does crossing-over occur?

Accepted Answer

A) prophase I of meiosis I 
B) anaphase I of meiosis II 
C) telophase I of meiosis I 
D) prophase II of meiosis II 
E) anaphase II of meiosis I 
A) prophase I of meiosis I 
B) anaphase I of meiosis II 
C) telophase I of meiosis I 
D) prophase II of meiosis II 
E) anaphase II of meiosis I

Question 5

Extra copies of sex chromosomes are more easily tolerated in humans than extra copies of autosomes.

Accepted Answer

A) True 
 B)False

Question 6

There is a species of desert lizard where only females are known to exist-there are no males known.It is nevertheless necessary for two females to court and for one to assume the posture of a male to stimulate the female to produce eggs.No fertilization can occur,and the eggs develop into female lizards.What is the probable evolutionary mechanism for this occurring?

Accepted Answer

A) The species is probably going extinct. 
B) The desert is relatively uniform and there is little advantage to maintaining variation,but the animal has not been able to completely evolve away from its heritage of sexual reproduction. 
C) This switch in mating behavior is the direct physical reflection of crossing-over. 
D) This is probably an asexual organism attempting to mimic sexual reproduction. 
A) The species is probably going extinct. 
B) The desert is relatively uniform and there is little advantage to maintaining variation,but the animal has not been able to completely evolve away from its heritage of sexual reproduction. 
C) This switch in mating behavior is the direct physical reflection of crossing-over. 
D) This is probably an asexual organism attempting to mimic sexual reproduction.

Question 7

Another name for a tetrad is a/an

Accepted Answer

A) homologue. 
B) bivalent. 
C) öocyte. 
D) gamete. 
E) polar body. 
A) homologue. 
B) bivalent. 
C) öocyte. 
D) gamete. 
E) polar body.

Question 8

Identify which event will occur during Prophase I of meiosis but does not occur during prophase of mitosis.

Accepted Answer

A) bivalents will form 
B) nuclear envelope will dissolve 
C) centrioles will form in animal cells 
D) chromatin will condense into chromosomes 
A) bivalents will form 
B) nuclear envelope will dissolve 
C) centrioles will form in animal cells 
D) chromatin will condense into chromosomes

Question 9

Meiosis occurs during all of the following EXCEPT

Accepted Answer

A) gametogenesis. 
B) oogenesis. 
C) pangenesis. 
D) spermatogenesis. 
A) gametogenesis. 
B) oogenesis. 
C) pangenesis. 
D) spermatogenesis.

Question 10

Which of the following steps would NOT lead to variation of genetic material?

Accepted Answer

A) crossing over of homologous chromosomes 
B) crossing over of sister chromatids 
C) the random alignment of the chromosomes during metaphase I 
D) the combination of sperm and egg genes 
A) crossing over of homologous chromosomes 
B) crossing over of sister chromatids 
C) the random alignment of the chromosomes during metaphase I 
D) the combination of sperm and egg genes

Question 11

During which stage of meiosis are the bivalents arranged along the equator?

Accepted Answer

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

Question 12

The overall function of meiosis includes all of the following EXCEPT

Accepted Answer

A) gamete production. 
B) reduction of chromosome number (from 2N to N). 
C) providing genetic variation in sexually reproducing organisms. 
D) growth of the overall individual. 
A) gamete production. 
B) reduction of chromosome number (from 2N to N). 
C) providing genetic variation in sexually reproducing organisms. 
D) growth of the overall individual.

Question 13

Which statement is true about the life cycle of plants but not of animals?

Accepted Answer

A) the gametophyte can be larger than the diploid generation 
B) they use sexual reproduction to produce new offspring 
C) they use meiosis in order to produce the gametes 
D) they will have a haploid and diploid phase of the life cycle 
A) the gametophyte can be larger than the diploid generation 
B) they use sexual reproduction to produce new offspring 
C) they use meiosis in order to produce the gametes 
D) they will have a haploid and diploid phase of the life cycle

Question 14

It could be said that males are able to provide gametes with more genetic diversity than females for reproduction.One main reason would be:

Accepted Answer

A) Males provide more genes in sperm than females provide in eggs. 
B) Crossing over occurs more often in the formation of sperm than in eggs. 
C) Spermatogenesis in males results in four functional sperm while oogenesis in females results in only one egg and three structures that contain genetic information that is lost when they disintegrate. 
D) Sperm that contain a recombination of genes are usually more successful in fertilizing an egg. 
A) Males provide more genes in sperm than females provide in eggs. 
B) Crossing over occurs more often in the formation of sperm than in eggs. 
C) Spermatogenesis in males results in four functional sperm while oogenesis in females results in only one egg and three structures that contain genetic information that is lost when they disintegrate. 
D) Sperm that contain a recombination of genes are usually more successful in fertilizing an egg.

Question 15

Monosomy occurs when an individual has only one of a particular type of chromosome.

Accepted Answer

A) True 
 B)False

Question 16

If a sperm cell contains 8 chromosomes,it comes from an animal that has ______ chromosomes.

Accepted Answer

A) 4 
B) 8 
C) 12 
D) 16 
E) 24 
A) 4 
B) 8 
C) 12 
D) 16 
E) 24

Question 17

Aneuploidy is a change in the number of chromosomes resulting from nondisjunction during meiosis.

Accepted Answer

A) True 
 B)False

Question 18

Where in the human male does spermatogenesis occur?

Accepted Answer

A) ovaries 
B) prostate gland 
C) epididymus 
D) testes 
A) ovaries 
B) prostate gland 
C) epididymus 
D) testes

Question 19

Which is NOT true about daughter cells of mitosis or meiosis?

Accepted Answer

A) In meiosis,daughter cells are haploid. 
B) In meiosis,there are four daughter cells. 
C) In mitosis,there are two daughter cells. 
D) In mitosis,the daughter cells are genetically identical. 
E) In meiosis,the daughter cells are genetically identical. 
A) In meiosis,daughter cells are haploid. 
B) In meiosis,there are four daughter cells. 
C) In mitosis,there are two daughter cells. 
D) In mitosis,the daughter cells are genetically identical. 
E) In meiosis,the daughter cells are genetically identical.

Question 20

Which statement is NOT true about homologues in meiosis I?

Accepted Answer

A) Homologous chromosomes pair to form a tetrad. 
B) Homologous chromosomes separate and go to different daughter cells. 
C) Each homologue's centromere splits to form two chromosomes. 
D) Homologues exchange genetic material between non-sister chromatids. 
E) Homologues interact with the spindle as if they were one chromosome. 
A) Homologous chromosomes pair to form a tetrad. 
B) Homologous chromosomes separate and go to different daughter cells. 
C) Each homologue's centromere splits to form two chromosomes. 
D) Homologues exchange genetic material between non-sister chromatids. 
E) Homologues interact with the spindle as if they were one chromosome.

Exam 10: Meiosis and Sexual Reproduction

The following picture depicts which of the following changes in chromosome structure.

If a cell contains 12 chromosomes at the end of meiosis I,how many chromosomes will the daughter cells contain at the end of meiosis II?

Which of the following statements is true about the life cycle of animals?

During which stage of meiosis does crossing-over occur?

Extra copies of sex chromosomes are more easily tolerated in humans than extra copies of autosomes.

Another name for a tetrad is a/an

Identify which event will occur during Prophase I of meiosis but does not occur during prophase of mitosis.

Meiosis occurs during all of the following EXCEPT

Which of the following steps would NOT lead to variation of genetic material?

During which stage of meiosis are the bivalents arranged along the equator?

The overall function of meiosis includes all of the following EXCEPT

Which statement is true about the life cycle of plants but not of animals?

It could be said that males are able to provide gametes with more genetic diversity than females for reproduction.One main reason would be:

Monosomy occurs when an individual has only one of a particular type of chromosome.

If a sperm cell contains 8 chromosomes,it comes from an animal that has ______ chromosomes.

Aneuploidy is a change in the number of chromosomes resulting from nondisjunction during meiosis.

Where in the human male does spermatogenesis occur?

Which is NOT true about daughter cells of mitosis or meiosis?

Which statement is NOT true about homologues in meiosis I?

A View of Life

Basic Chemistry

The Chemistry of Organic Molecules

Cell Structure and Function

Membrane Structure and Function

Metabolism: Energy and Enzymes

Photosynthesis

Cellular Respiration

The Cell Cycle and Cellular Reproduction

Mendelian Patterns of Inheritance

Molecular Biology of the Gene

Regulation of Gene Expression

Biotechnology and Genomics

Darwin and Evolution

How Populations Evolve

Speciation and Macroevolution

Origin and History of Life

Taxonomy,systematics,and Phylogeny

Viruses,bacteria,and Archaea

Protist Evolution and Diversity

Fungi Evolution and Diversity

Plant Evolution and Diversity

Flowering Plants: Structure and Organization

Flowering Plants: Nutrition and Transport

Flowering Plants: Control of Growth Responses

Flowering Plants: Reproduction

Invertebrate Evolution

Vertebrate Evolution

Human Evolution

Animal Organization and Homeostasis

Circulation and Cardiovascular Systems

The Lymphatic and Immune Systems

Digestive Systems and Nutrition

Respiratory Systems

Body Fluid Regulation and Excretory Systems

Neurons and Nervous Systems

Sense Organs

Locomotion and Support Systems

Hormones and Endocrine Systems

Reproductive Systems

Animal Development

Behavioral Ecology

Population Ecology

Community and Ecosystem Ecology

Major Ecosystems of the Biosphere

Conservation of Biodiversity

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