Question 1

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. 
E) tetraploid, 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. 
E) tetraploid, and the chromosomes are each composed of two chromatids.

Question 2

When do homologous pairs of chromosomes align opposite of each other at the equator of a cell?

Accepted Answer

A) mitosis metaphase 
B) meiosis metaphase I 
C) meiosis telophase II 
D) meiosis metaphase II 
E) mitosis telophase 
A) mitosis metaphase 
B) meiosis metaphase I 
C) meiosis telophase II 
D) meiosis metaphase II 
E) mitosis telophase

Question 3

The multicellular,diploid phase in a plant life cycle is known as the

Accepted Answer

A) gametophyte. 
B) sporophyte. 
C) zygote. 
D) dispersal stage. 
E) F1 generation. 
A) gametophyte. 
B) sporophyte. 
C) zygote. 
D) dispersal stage. 
E) F1 generation.

Question 4

Which of the following defines a genome?

Accepted Answer

A) representation of a complete set of a cell's polypeptides 
B) the complete set of an organism's polypeptides 
C) the complete set of a species' polypeptides 
D) a karyotype 
E) the complete set of an organism's genes 
A) representation of a complete set of a cell's polypeptides 
B) the complete set of an organism's polypeptides 
C) the complete set of a species' polypeptides 
D) a karyotype 
E) the complete set of an organism's genes

Question 5

The human X and Y chromosomes

Accepted Answer

A) are both present in every somatic cell of males and females alike. 
B) are of approximately equal size and number of genes. 
C) are almost entirely homologous, despite their different names. 
D) include genes that determine an individual's sex. 
E) include only genes that govern sex determination. 
A) are both present in every somatic cell of males and females alike. 
B) are of approximately equal size and number of genes. 
C) are almost entirely homologous, despite their different names. 
D) include genes that determine an individual's sex. 
E) include only genes that govern sex determination.

Question 6

In part III of the above figure,the progression of events corresponds to which of the following series?

Accepted Answer

A) zygote, mitosis, gametophyte, mitosis, fertilization, zygote, mitosis 
B) sporophyte, meiosis, spore, mitosis, gametophyte, mitosis, gametes, fertilization 
C) fertilization, mitosis, multicellular haploid, mitosis, spores, sporophyte 
D) gametophyte, meiosis, zygote, spores, sporophyte, zygote 
E) meiosis, fertilization, zygote, mitosis, adult, meiosis 
A) zygote, mitosis, gametophyte, mitosis, fertilization, zygote, mitosis 
B) sporophyte, meiosis, spore, mitosis, gametophyte, mitosis, gametes, fertilization 
C) fertilization, mitosis, multicellular haploid, mitosis, spores, sporophyte 
D) gametophyte, meiosis, zygote, spores, sporophyte, zygote 
E) meiosis, fertilization, zygote, mitosis, adult, meiosis

Question 7

You have isolated DNA from cells in different stages of meiosis within one species.You have determined the relative DNA content for each type,and plotted the results on the graph shown below.Refer to the graph to answer the following questions.
  
-Which sample of DNA might be from a cell at the end of meiosis I?

Accepted Answer

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

Question 8

The transmission of traits from one generation to the next is called

Accepted Answer

A) inheritance. 
B) dominance. 
C) natural selection. 
D) Mendelian genetics. 
E) evolution. 
A) inheritance. 
B) dominance. 
C) natural selection. 
D) Mendelian genetics. 
E) evolution.

Question 9

Columnar aspen,found commonly throughout Canada,although not in the Northwest Territories,can send out underground stems for asexual reproduction.Sexual reproduction is not as common,but when it does happen,the haploid gametes have 19 chromosomes.How many chromosomes are in the cells of the underground stems?

Accepted Answer

A) 9 
B) 10 
C) 19 
D) 38 
E) It is not possible to say from this information. 
A) 9 
B) 10 
C) 19 
D) 38 
E) It is not possible to say from this information.

Question 10

Use the following information to answer the next questions.
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.
-In these asexual rotifers,how does variation occur without meiosis and fertilization?

Accepted Answer

A) The rotifers have evolved a different mechanism to exchange DNA. 
B) Rotifers must produce haploid spores. 
C) Variation is caused by mutation and maintained by selection. 
D) Some rotifers must selectively lose chromosomes. 
E) Rotifers must live only in specialized environments. 
A) The rotifers have evolved a different mechanism to exchange DNA. 
B) Rotifers must produce haploid spores. 
C) Variation is caused by mutation and maintained by selection. 
D) Some rotifers must selectively lose chromosomes. 
E) Rotifers must live only in specialized environments.

Question 11

When do centromeres split and sister chromatids migrate to opposite poles in meiosis?

Accepted Answer

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

Question 12

Refer to the life cycles illustrated in the figure below to answer the following questions.
  
-Which of the life cycles is typical for animals?

Accepted Answer

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

Question 13

Eukaryotic sexual life cycles show tremendous variation.Of the following elements,which 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 
E) I, II, III, IV, and V 
A) I, IV, and V 
B) I, II, and IV 
C) II, III, and IV 
D) II, IV, and V 
E) I, II, III, IV, and V

Question 14

A tetrad includes which of the following sets of DNA strands?

Accepted Answer

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

Question 15

Chromatids are separated from each other.

Accepted Answer

A) The statement is true for mitosis only. 
B) The statement is true for meiosis I only. 
C) The statement is true for meiosis II only. 
D) The statement is true for mitosis and meiosis I. 
E) The statement is true for mitosis and meiosis II. 
A) The statement is true for mitosis only. 
B) The statement is true for meiosis I only. 
C) The statement is true for meiosis II only. 
D) The statement is true for mitosis and meiosis I. 
E) The statement is true for mitosis and meiosis II.

Question 16

Which of the following best describes the frequency of crossing over in mammals?

Accepted Answer

A) ~50 per chromosome pair 
B) ~2 per meiotic cell 
C) at least 1-2 per chromosome pair 
D) ~1 per pair of sister chromatids 
E) a very rare event among hundreds of cells 
A) ~50 per chromosome pair 
B) ~2 per meiotic cell 
C) at least 1-2 per chromosome pair 
D) ~1 per pair of sister chromatids 
E) a very rare event among hundreds of cells

Question 17

Experiments with cohesins have found that

Accepted Answer

A) cohesins are protected from destruction throughout meiosis I and II. 
B) cohesins are cleaved from chromosomes at the centromere before anaphase I. 
C) cohesins are protected from cleavage at the centromere during meiosis I. 
D) a protein cleaves cohesins before metaphase I. 
E) a protein that cleaves cohesins would cause cellular death. 
A) cohesins are protected from destruction throughout meiosis I and II. 
B) cohesins are cleaved from chromosomes at the centromere before anaphase I. 
C) cohesins are protected from cleavage at the centromere during meiosis I. 
D) a protein cleaves cohesins before metaphase I. 
E) a protein that cleaves cohesins would cause cellular death.

Question 18

At which stage of mitosis are chromosomes usually photographed in the preparation of a karyotype?

Accepted Answer

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

Question 19

Use the following information to answer the questions below.
A species of lizard has been discovered that reproduces asexually.
-What type of habitat would you expect to find it in?

Accepted Answer

A) aquatic 
B) one with seasonal variation 
C) desert 
D) stable 
E) unstable 
A) aquatic 
B) one with seasonal variation 
C) desert 
D) stable 
E) unstable

Question 20

Which of the following can occur by the process of meiosis but not mitosis?

Accepted Answer

A) Haploid cells fuse to form diploid cells. 
B) Haploid cells multiply into more haploid cells. 
C) Diploid cells form haploid cells. 
D) A diploid cell combines with a haploid cell. 
E) Diploid cells multiple into more diploid cells. 
A) Haploid cells fuse to form diploid cells. 
B) Haploid cells multiply into more haploid cells. 
C) Diploid cells form haploid cells. 
D) A diploid cell combines with a haploid cell. 
E) Diploid cells multiple into more diploid cells.

Exam 13: Meiosis and Sexual Life Cycles

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

When do homologous pairs of chromosomes align opposite of each other at the equator of a cell?

The multicellular,diploid phase in a plant life cycle is known as the

Which of the following defines a genome?

The human X and Y chromosomes

In part III of the above figure,the progression of events corresponds to which of the following series?

The transmission of traits from one generation to the next is called

When do centromeres split and sister chromatids migrate to opposite poles in meiosis?

Refer to the life cycles illustrated in the figure below to answer the following questions. -Which of the life cycles is typical for animals?

Eukaryotic sexual life cycles show tremendous variation.Of the following elements,which do all sexual life cycles have in common? I.Alternation of generations II.Meiosis III.Fertilization IV.Gametes V.Spores

A tetrad includes which of the following sets of DNA strands?

Chromatids are separated from each other.

Which of the following best describes the frequency of crossing over in mammals?

Experiments with cohesins have found that

At which stage of mitosis are chromosomes usually photographed in the preparation of a karyotype?

Use the following information to answer the questions below. A species of lizard has been discovered that reproduces asexually. -What type of habitat would you expect to find it in?

Which of the following can occur by the process of meiosis but not mitosis?

Introduction: Evolution and Themes of Biology

The Chemical Context of Life

Water and Life

Carbon and the Molecular Diversity of Life

The Structure and Function of Large Biological Molecules

A Tour of the Cell

Membrane Structure and Function

An Introduction to Metabolism

Cellular Respiration and Fermentation

Photosynthesis

Cell Communication

The Cell Cycle

Mendel and the Gene Idea

The Chromosomal Basis of Inheritance

The Molecular Basis of Inheritance

From Gene to Protein

Regulation of Gene Expression

Viruses

DNA Tools and Biotechnology

Genomes and Their Evolution

Descent with Modification: A Darwinian View of Life

The Evolution of Populations

The Origin of Species

The History of Life on Earth

Phylogeny and the Tree of Life

Bacteria and Archaea

Protists

Plant Diversity I: How Plants Colonized Land

Plant Diversity II: The Evolution of Seed Plants

Fungi

An Overview of Animal Diversity

An Introduction to Invertebrates

The Origin and Evolution of Vertebrates

Plant Structure,Growth,and Development

Resource Acquisition and Transport in Vascular Plants

Soil and Plant Nutrition

Angiosperm Reproduction and Biotechnology

Plant Responses to Internal and External Signals

Basic Principles of Animal Form and Function

Animal Nutrition

Circulation and Gas Exchange

The Immune System

Osmoregulation and Excretion

Hormones and the Endocrine System

Animal Reproduction

Animal Development

Neurons,Synapses,and Signalling

Nervous Systems

Sensory and Motor Mechanisms

Animal Behaviour

An Introduction to Ecology and the Biosphere

Population Ecology

Community Ecology

Ecosystems and Restoration Ecology

Conservation Biology and Global Change

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