Question 1

Which of the following cell types or organisms can utilize both mitosis and meiosis in the correct circumstances?

Accepted Answer

A)  a haploid animal cell 
B)  a diploid cell from a plant stem 
C)  any diploid animal cell 
D)  a unicellular alga 
A)  a haploid animal cell 
B)  a diploid cell from a plant stem 
C)  any diploid animal cell 
D)  a unicellular alga

Question 2

Please use the following information to answer the question(s) below.
A woman who has blood type A positive has a daughter who is type O positive and a son who is type B negative. Rh positive is a trait that shows simple dominance over Rh negative and is designated by the alleles R and r, respectively. A third gene for the MN blood group has codominant alleles M and N.
-Referring to a plant's sexual life cycle, which of the following processes leads directly to the formation of gametes?

Accepted Answer

A)  sporophyte meiosis 
B)  gametophyte mitosis 
C)  gametophyte meiosis 
D)  sporophyte mitosis 
A)  sporophyte meiosis 
B)  gametophyte mitosis 
C)  gametophyte meiosis 
D)  sporophyte mitosis

Question 3

After telophase I of meiosis, the chromosomal makeup of each daughter cell is

Accepted Answer

A)  diploid, and the chromosomes are each composed of a single chromatid. 
B)  diploid, and the chromosomes are each composed of two chromatids. 
C)  haploid, and the chromosomes are each composed of a single chromatid. 
D)  haploid, and the chromosomes are each composed of two chromatids. 
A)  diploid, and the chromosomes are each composed of a single chromatid. 
B)  diploid, and the chromosomes are each composed of two chromatids. 
C)  haploid, and the chromosomes are each composed of a single chromatid. 
D)  haploid, and the chromosomes are each composed of two chromatids.

Question 4

Please use the following information to answer the question(s) below.
There is a group of invertebrate animals called rotifers, among which a particular group of species reproduces, as far as is known, only asexually. These rotifers, however, have survived a long evolutionary history without evidence of having been overcome by excessive mutations.
-How is natural selection related to sexual reproduction as opposed to asexual reproduction?

Accepted Answer

A)  Sexual reproduction results in many new gene combinations, some of which will lead to differential reproduction. 
B)  Sexual reproduction results in the most appropriate and healthiest balance of two sexes in a population. 
C)  Sexual reproduction results in the greatest number of new mutations. 
D)  Sexual reproduction allows the greatest number of offspring to be produced. 
A)  Sexual reproduction results in many new gene combinations, some of which will lead to differential reproduction. 
B)  Sexual reproduction results in the most appropriate and healthiest balance of two sexes in a population. 
C)  Sexual reproduction results in the greatest number of new mutations. 
D)  Sexual reproduction allows the greatest number of offspring to be produced.

Question 5

Figure 10.1
-Refer to the life cycles illustrated in Figure 10.1. Which of the life cycles is (are) typical for plants and some algae?

Accepted Answer

A)  I only 
B)  II only 
C)  III only 
D)  I and II 
A)  I only 
B)  II only 
C)  III only 
D)  I and II

Question 6

Figure 10.1
-In a life cycle such as that shown in part III of Figure 10.1, if the zygote's chromosome number is 10, which of the following will be true?

Accepted Answer

A)  The sporophyte's chromosome number per cell is 10 and the gametophyte's is 5. 
B)  The sporophyte's chromosome number per cell is 5 and the gametophyte's is 10. 
C)  The sporophyte and gametophyte each have 10 chromosomes per cell. 
D)  The sporophyte and gametophyte each have 5 chromosomes per cell. 
A)  The sporophyte's chromosome number per cell is 10 and the gametophyte's is 5. 
B)  The sporophyte's chromosome number per cell is 5 and the gametophyte's is 10. 
C)  The sporophyte and gametophyte each have 10 chromosomes per cell. 
D)  The sporophyte and gametophyte each have 5 chromosomes per cell.

Question 7

For the following question(s), match the key event of meiosis with the stages listed below.
I. prophase I V. prophase II
II. metaphase I VI. metaphase II
III. anaphase I VII. anaphase II
IV. telophase I VIII. telophase II
-When homologous chromosomes cross over, what is the result?

Accepted Answer

A)  Two sister chromatids get tangled, resulting in one altering the sequence of its DNA. 
B)  Two sister chromatids exchange identical pieces of DNA. 
C)  Specific proteins break the two strands of nonsister chromatids and re-join them. 
D)  Each of the four DNA strands of a homologous pair is broken, and the pieces are mixed. 
A)  Two sister chromatids get tangled, resulting in one altering the sequence of its DNA. 
B)  Two sister chromatids exchange identical pieces of DNA. 
C)  Specific proteins break the two strands of nonsister chromatids and re-join them. 
D)  Each of the four DNA strands of a homologous pair is broken, and the pieces are mixed.

Question 8

Please use the following information to answer the question(s) below.
A woman who has blood type A positive has a daughter who is type O positive and a son who is type B negative. Rh positive is a trait that shows simple dominance over Rh negative and is designated by the alleles R and r, respectively. A third gene for the MN blood group has codominant alleles M and N.
-Which of the following is the smallest unit that would contain a complete copy of the entire human genome?

Accepted Answer

A)  one human somatic cell 
B)  one human chromosome 
C)  all of the DNA of one human 
D)  one human gene 
A)  one human somatic cell 
B)  one human chromosome 
C)  all of the DNA of one human 
D)  one human gene

Question 9

Which of the following events occurs in meiosis but not in mitosis?

Accepted Answer

A)  chromosome replication 
B)  synapsis of chromosomes 
C)  production of daughter cells 
D)  condensation of chromatin 
A)  chromosome replication 
B)  synapsis of chromosomes 
C)  production of daughter cells 
D)  condensation of chromatin

Question 10

Which of the following structures is found in a pair of homologous chromosomes?

Accepted Answer

A)  two single-stranded chromosomes that have synapsed 
B)  two sister chromatids that have synapsed 
C)  four sister chromatids 
D)  four unique chromosomes 
A)  two single-stranded chromosomes that have synapsed 
B)  two sister chromatids that have synapsed 
C)  four sister chromatids 
D)  four unique chromosomes

Question 11

For the following question(s), match the key event of meiosis with the stages listed below.
I. prophase I V. prophase II
II. metaphase I VI. metaphase II
III. anaphase I VII. anaphase II
IV. telophase I VIII. telophase II
-Centromeres of sister chromatids disjoin and chromatids separate.

Accepted Answer

A)  III 
B)  IV 
C)  V 
D)  VII 
A)  III 
B)  IV 
C)  V 
D)  VII

Question 12

Figure 10.3
-You have isolated DNA from three different cell types of an organism, determined the relative DNA content for each type, and plotted the results on the graph shown in Figure 10.3. Which sample(s) of DNA might be from a skin cell arrested in G0 of the cell cycle?

Accepted Answer

A)  I 
B)  II 
C)  either I or II 
D)  either I or III 
A)  I 
B)  II 
C)  either I or II 
D)  either I or III

Question 13

Which of the following statements best describes a karyotype?

Accepted Answer

A)  a pictorial representation of all the genes for a species 
B)  a display of all of the chromosomes of a single cell 
C)  the combination of all the maternal and paternal chromosomes of a species 
D)  the collection of all the chromosomes in an individual organism 
A)  a pictorial representation of all the genes for a species 
B)  a display of all of the chromosomes of a single cell 
C)  the combination of all the maternal and paternal chromosomes of a species 
D)  the collection of all the chromosomes in an individual organism

Question 14

Please use the following information to answer the question(s) below.
There is a group of invertebrate animals called rotifers, among which a particular group of species reproduces, as far as is known, only asexually. These rotifers, however, have survived a long evolutionary history without evidence of having been overcome by excessive mutations.
-If we continued to follow the cell lineage from question 3, the DNA content of a cell at metaphase of meiosis II would be

Accepted Answer

A)  0.25x. 
B)  0.5x. 
C)  x. 
D)  2x. 
A)  0.25x. 
B)  0.5x. 
C)  x. 
D)  2x.

Question 15

Figure 10.1
-Refer to the life cycles illustrated in Figure 10.1. Which of the life cycles is (are) typical for most fungi and some protists?

Accepted Answer

A)  I only 
B)  II only 
C)  III only 
D)  I and III 
A)  I only 
B)  II only 
C)  III only 
D)  I and III

Question 16

Please use the following information to answer the question(s) below.
There is a group of invertebrate animals called rotifers, among which a particular group of species reproduces, as far as is known, only asexually. These rotifers, however, have survived a long evolutionary history without evidence of having been overcome by excessive mutations.
-Because the rotifers develop from eggs, but asexually, what can you predict?

Accepted Answer

A)  The eggs and the zygotes are all haploid. 
B)  The animals are all males. 
C)  Although asexual, both males and females are found in nature. 
D)  No males can be found. 
A)  The eggs and the zygotes are all haploid. 
B)  The animals are all males. 
C)  Although asexual, both males and females are found in nature. 
D)  No males can be found.

Question 17

Please use the following information to answer the question(s) below.
A woman who has blood type A positive has a daughter who is type O positive and a son who is type B negative. Rh positive is a trait that shows simple dominance over Rh negative and is designated by the alleles R and r, respectively. A third gene for the MN blood group has codominant alleles M and N.
-Eukaryotic sexual life cycles show tremendous variation. Which of the following elements do all sexual life cycles have in common?
I. alternation of generations
II. meiosis
III. fertilization
IV. gametes
V. spores

Accepted Answer

A)  I, IV, and V 
B)  I, II, and IV 
C)  II, III, and IV 
D)  II, IV, and V 
A)  I, IV, and V 
B)  I, II, and IV 
C)  II, III, and IV 
D)  II, IV, and V

Question 18

The somatic cells of a privet shrub each contain 46 chromosomes. To be as different as they are from human cells, which have the same number of chromosomes, which of the following must be true?

Accepted Answer

A)  Privet cells cannot reproduce sexually. 
B)  Genes of privet chromosomes are significantly different from those in humans. 
C)  Privet shrubs must be metabolically more like animals than like other shrubs. 
D)  Genes on a particular privet chromosome, such as the X, must be on a different human chromosome, such as number 18. 
A)  Privet cells cannot reproduce sexually. 
B)  Genes of privet chromosomes are significantly different from those in humans. 
C)  Privet shrubs must be metabolically more like animals than like other shrubs. 
D)  Genes on a particular privet chromosome, such as the X, must be on a different human chromosome, such as number 18.

Question 19

When we see chiasmata under a microscope, that lets us know that which of the following processes has occurred?

Accepted Answer

A)  meiosis II 
B)  anaphase II 
C)  prophase I 
D)  separation of homologs 
A)  meiosis II 
B)  anaphase II 
C)  prophase I 
D)  separation of homologs

Question 20

Please use the following information to answer the question(s) below.
A woman who has blood type A positive has a daughter who is type O positive and a son who is type B negative. Rh positive is a trait that shows simple dominance over Rh negative and is designated by the alleles R and r, respectively. A third gene for the MN blood group has codominant alleles M and N.
-Which of the following is a true statement about sexual versus asexual reproduction?

Accepted Answer

A)  Asexual reproduction, but not sexual reproduction, is characteristic of plants and fungi. 
B)  In sexual reproduction, individuals transmit 50% of their genes to each of their offspring. 
C)  In asexual reproduction, offspring are produced by fertilization without meiosis. 
D)  Asexual reproduction produces only haploid offspring. 
A)  Asexual reproduction, but not sexual reproduction, is characteristic of plants and fungi. 
B)  In sexual reproduction, individuals transmit 50% of their genes to each of their offspring. 
C)  In asexual reproduction, offspring are produced by fertilization without meiosis. 
D)  Asexual reproduction produces only haploid offspring.

Exam 10: Meiosis and Sexual Life Cycles

Which of the following cell types or organisms can utilize both mitosis and meiosis in the correct circumstances?

After telophase I of meiosis, the chromosomal makeup of each daughter cell is

Figure 10.1 -Refer to the life cycles illustrated in Figure 10.1. Which of the life cycles is (are) typical for plants and some algae?

Figure 10.1 -In a life cycle such as that shown in part III of Figure 10.1, if the zygote's chromosome number is 10, which of the following will be true?

For the following question(s), match the key event of meiosis with the stages listed below. I. prophase I V. prophase II II. metaphase I VI. metaphase II III. anaphase I VII. anaphase II IV. telophase I VIII. telophase II -When homologous chromosomes cross over, what is the result?

Which of the following events occurs in meiosis but not in mitosis?

Which of the following structures is found in a pair of homologous chromosomes?

For the following question(s), match the key event of meiosis with the stages listed below. I. prophase I V. prophase II II. metaphase I VI. metaphase II III. anaphase I VII. anaphase II IV. telophase I VIII. telophase II -Centromeres of sister chromatids disjoin and chromatids separate.

Figure 10.3 -You have isolated DNA from three different cell types of an organism, determined the relative DNA content for each type, and plotted the results on the graph shown in Figure 10.3. Which sample(s) of DNA might be from a skin cell arrested in G0 of the cell cycle?

Which of the following statements best describes a karyotype?

Figure 10.1 -Refer to the life cycles illustrated in Figure 10.1. Which of the life cycles is (are) typical for most fungi and some protists?

The somatic cells of a privet shrub each contain 46 chromosomes. To be as different as they are from human cells, which have the same number of chromosomes, which of the following must be true?

When we see chiasmata under a microscope, that lets us know that which of the following processes has occurred?

Introduction: Evolution and the Foundations of Biology

The Chemical Context of Life

Carbon and the Molecular Diversity of Life

A Tour of the Cell

Membrane Transport and Cell Signaling

An Introduction to Metabolism

Cellular Respiration and Fermentation

Photosynthesis

The Cell Cycle

Mendel and the Gene Idea

The Chromosomal Basis of Inheritance

The Molecular Basis of Inheritance

Gene Expression: From Gene to Protein

Regulation of Gene Expression

Development, Stem Cells, and Cancer

Viruses

Genomes and Their Evolution

Descent With Modification

Phylogeny

The Evolution of Populations

The Origin of Species

Broad Patterns of Evolution

Early Life and the Diversification of Prokaryotes

The Origin and Diversification of Eukaryotes

The Colonization of Land by Plants and Fungi

The Rise of Animal Diversity

Plant Structure and Growth

Resource Acquisition, Nutrition, and Transport in Vascular Plants

Reproduction and Domestication of Flowering Plants

Plant Responses to Internal and External Signals

Homeostasis and Endocrine Signaling

Animal Nutrition

Circulation and Gas Exchange

The Immune System

Reproduction and Development

Neurons, Synapses, and Signaling

Nervous and Sensory Systems

Motor Mechanisms and Behavior

Population Ecology and the Distribution of Organisms

Species Interactions

Ecosystems and Energy

Global Ecology and Conservation Biology

Filters