Question 1

Which of the following does NOT occur in prophase I of meiosis?

Accepted Answer

A) cytokinesis 
B) pairing of homologues 
C) formation of a bipolar spindle 
D) crossing over 
E) condensation of chromosomes 
A) cytokinesis 
B) pairing of homologues 
C) formation of a bipolar spindle 
D) crossing over 
E) condensation of chromosomes

Question 2

Major gene reshuffling takes place during

Accepted Answer

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

Question 3

The essence of meiosis is that

Accepted Answer

A) gametes receive one copy of each member of each pair of homologous chromosomes. 
B) diploid gametes are formed. 
C) each gamete receives one member of each pair of homologous chromosomes. 
D) haploid gametes are formed. 
E) each gamete receives one member of each pair of homologous chromosomes, and haploid gametes are formed. 
A) gametes receive one copy of each member of each pair of homologous chromosomes. 
B) diploid gametes are formed. 
C) each gamete receives one member of each pair of homologous chromosomes. 
D) haploid gametes are formed. 
E) each gamete receives one member of each pair of homologous chromosomes, and haploid gametes are formed.

Question 4

There are __________ molecules of DNA in a developing human sperm cell at the beginning of prophase I.

Accepted Answer

A) 92 
B) 23 
C) 46 
D) half as many (as compared to somatic cells) 
E) twice as many (as compared to mature sperm) 
A) 92 
B) 23 
C) 46 
D) half as many (as compared to somatic cells) 
E) twice as many (as compared to mature sperm)

Question 5

In this generalized illustration of gametogenesis, the four cells in the right column should be labeled

Accepted Answer

A) sperm. 
B) eggs. 
C) ovum and three polar bodies. 
D) secondary spermatocytes. 
E) diploid. 
A) sperm. 
B) eggs. 
C) ovum and three polar bodies. 
D) secondary spermatocytes. 
E) diploid.

Question 6

If a diploid organism has a genome consisting of 4 pairs of chromosomes, it can produce __________ different combinations of maternal and paternal chromosomes (disregarding crossing over).

Accepted Answer

A) 4 
B) 8 
C) 12 
D) 16 e 32 
A) 4 
B) 8 
C) 12 
D) 16 e 32

Question 7

Crossing over occurs during

Accepted Answer

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

Question 8

Sperm are formed from the direct maturation of

Accepted Answer

A) sperm mother cells. 
B) spermatids. 
C) spermatogonial cells. 
D) primary spermatocytes. 
E) secondary spermatocytes. 
A) sperm mother cells. 
B) spermatids. 
C) spermatogonial cells. 
D) primary spermatocytes. 
E) secondary spermatocytes.

Question 9

During which phase of meiosis will the chromosomes appear as packets of four chromatids?

Accepted Answer

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

Question 10

The cell in this illustration is in __________.

Accepted Answer

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

Question 11

Anaphase

Accepted Answer

A) involves the lining up of the chromosomes across the equatorial plate. 
B) is the same in mitosis and meiosis I and II. 
C) is initiated when the chromosomes begin to move apart. 
D) results in an unequal distribution of chromosomes to the resulting cells. 
E) does all of these. 
A) involves the lining up of the chromosomes across the equatorial plate. 
B) is the same in mitosis and meiosis I and II. 
C) is initiated when the chromosomes begin to move apart. 
D) results in an unequal distribution of chromosomes to the resulting cells. 
E) does all of these.

Question 12

All of the following are TRUE of adaptive traits EXCEPT

Accepted Answer

A) they allow individuals to adjust to the environment. 
B) they spread faster through populations of asexually reproducing organisms. 
C) they spread faster through populations of sexually reproducing organisms. 
D) variety results from mixing of the genetic traits. 
E) all of these are true. 
A) they allow individuals to adjust to the environment. 
B) they spread faster through populations of asexually reproducing organisms. 
C) they spread faster through populations of sexually reproducing organisms. 
D) variety results from mixing of the genetic traits. 
E) all of these are true.

Question 13

Chromosomes of a pair of homologous chromosomes may differ from other chromosomes in terms of

Accepted Answer

A) size. 
B) shape. 
C) the alleles they carry. 
D) the position of the centromere. 
E) all of these. 
A) size. 
B) shape. 
C) the alleles they carry. 
D) the position of the centromere. 
E) all of these.

Question 14

Different, or alternative, forms of the same gene are

Accepted Answer

A) genetomorphs. 
B) alleles. 
C) mutants. 
D) chromatids. 
E) homologous. 
A) genetomorphs. 
B) alleles. 
C) mutants. 
D) chromatids. 
E) homologous.

Question 15

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) all of these reasons are true. 
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) all of these reasons are true.

Question 16

If a child more strongly resembles one parent's physical traits than the other parent's, the explanation could be due to chromosome movements during

Accepted Answer

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

Question 17

During meiosis II,

Accepted Answer

A) cytokinesis results in the formation of a total of two cells. 
B) sister chromatids of each chromosome are separated from each other. 
C) homologous chromosomes pair. 
D) homologous chromosomes separate. 
E) sister chromatids exchange parts. 
A) cytokinesis results in the formation of a total of two cells. 
B) sister chromatids of each chromosome are separated from each other. 
C) homologous chromosomes pair. 
D) homologous chromosomes separate. 
E) sister chromatids exchange parts.

Question 18

During prophase II,

Accepted Answer

A) a new bipolar spindle forms. 
B) crossing over occurs. 
C) chromosomes are single-stranded. 
D) the cell is diploid. 
E) the nuclear envelope re-forms. 
A) a new bipolar spindle forms. 
B) crossing over occurs. 
C) chromosomes are single-stranded. 
D) the cell is diploid. 
E) the nuclear envelope re-forms.

Question 19

Which of the following cells is NOT haploid?

Accepted Answer

A) secondary spermatocyte 
B) sperm 
C) primary oocyte 
D) spermatids 
E) polar bodies 
A) secondary spermatocyte 
B) sperm 
C) primary oocyte 
D) spermatids 
E) polar bodies

Question 20

In plants, which of the following cells is(are) diploid?

Accepted Answer

A) egg 
B) sperm 
C) spore 
D) leaf cell 
E) spore and leaf cell 
A) egg 
B) sperm 
C) spore 
D) leaf cell 
E) spore and leaf cell

Exam 10: Meiosis and Sexual Reproduction

Which of the following does NOT occur in prophase I of meiosis?

Major gene reshuffling takes place during

The essence of meiosis is that

There are __________ molecules of DNA in a developing human sperm cell at the beginning of prophase I.

In this generalized illustration of gametogenesis, the four cells in the right column should be labeled

If a diploid organism has a genome consisting of 4 pairs of chromosomes, it can produce __________ different combinations of maternal and paternal chromosomes (disregarding crossing over).

Crossing over occurs during

Sperm are formed from the direct maturation of

During which phase of meiosis will the chromosomes appear as packets of four chromatids?

The cell in this illustration is in __________.

Anaphase

All of the following are TRUE of adaptive traits EXCEPT

Chromosomes of a pair of homologous chromosomes may differ from other chromosomes in terms of

Different, or alternative, forms of the same gene are

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

If a child more strongly resembles one parent's physical traits than the other parent's, the explanation could be due to chromosome movements during

During meiosis II,

During prophase II,

Which of the following cells is NOT haploid?

In plants, which of the following cells is(are) diploid?

Invitation to Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure and Function

A Closer Look at Cell Membranes

Ground Rules of Metabolism

Where It Startsphotosynthesis

Energy-Releasing Pathways

How Cells Reproduce

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Dna Structure and Function

From Dna to Protein

Controls Over Genes

Recombinant Dna and Genetic Engineering

The Macroevolutionary Puzzle

Emergence of Evolutionary Thought

Organizing Information About Species

The Origin and Evolution of Life

Viruses and Prokaryotes

Protists the Simplest Eukaryotes

Plants

Fungi

Animals: the Invertebrates

Animal Evolution the Chordates

Human Evolution: a Case Study

Plant Tissues

Plant Nutrition and Transport

Plant Reproduction

Plant Growth and Development

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Protection, Support, and Movement

Circulation

Immunity

Respiration

Digestion and Human Nutrition

Maintaining the Internal Environment

Animal Reproductive Systems

Animal Development

Animal Behavior

Population Ecology

Community Structure and Biodiversity

Ecosystems

The Biosphere

Human Impacts on the Biosphere

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