Question 1

Which action is unable to produce variation?

Accepted Answer

A)  Crossing over 
B)  Random alignment of chromosomes during meiosis 
C)  Asexual reproduction 
D)  Genetic recombination of alleles 
E)  Sexual reproduction 
A)  Crossing over 
B)  Random alignment of chromosomes during meiosis 
C)  Asexual reproduction 
D)  Genetic recombination of alleles 
E)  Sexual reproduction

Question 2

Which statement correctly describes human chromosomes after meiosis I?

Accepted Answer

A)  The haploid number is 22. 
B)  Human gametes end up with two of each type of 23 chromosomes. 
C)  There are 46 chromosomes in each cell. 
D)  Each of the 23 chromosomes contains two sister chromatids. 
E)  Human gametes end up with one of each type of 22 chromosomes. 
A)  The haploid number is 22. 
B)  Human gametes end up with two of each type of 23 chromosomes. 
C)  There are 46 chromosomes in each cell. 
D)  Each of the 23 chromosomes contains two sister chromatids. 
E)  Human gametes end up with one of each type of 22 chromosomes.

Question 3

____________________ reproduction produces clones of the parent.

Accepted Answer

A)  Meiotic 
B)  Mitotic 
C)  Eukaryotic 
D)  Translation 
E)  Gemmule 
A)  Meiotic 
B)  Mitotic 
C)  Eukaryotic 
D)  Translation 
E)  Gemmule

Question 4

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 5

In comparing mitosis and meiosis,which statement is true?

Accepted Answer

A)  Meiosis I is more like mitosis than is meiosis II.. 
B)  Both processes result in four cells. 
C)  Crossing over of homologues occurs in both. 
D)  Chromatids are present only in mitosis. 
E)  Meiosis II resembles mitosis.. 
A)  Meiosis I is more like mitosis than is meiosis II.. 
B)  Both processes result in four cells. 
C)  Crossing over of homologues occurs in both. 
D)  Chromatids are present only in mitosis. 
E)  Meiosis II resembles mitosis..

Question 6

Sexual reproduction in animals starts with diploid ________ cells that form haploid __________

Accepted Answer

The answer of Sexual reproduction in animals starts with diploid...

Question 7

At __________,the fusion of two gametes produces a(n)__________.

Accepted Answer

fertilizat

Question 8

Some of the stages of meiosis are listed below. For the following statements, select the best choice of these stages.
-Recombination via crossing over occurs during this stage.

Accepted Answer

A) Prophase I 
B) Metaphase II 
C) Anaphase I 
D) Anaphase II 
E) Telophase I 
A) Prophase I 
B) Metaphase II 
C) Anaphase I 
D) Anaphase II 
E) Telophase I

Question 9

After meiosis,what process restores the chromosome number in diploid individuals?

Accepted Answer

A)  Spermatogenesis 
B)  Transcription 
C)  Fertilization 
D)  Oogenesis 
E)  Gametogenesis 
A)  Spermatogenesis 
B)  Transcription 
C)  Fertilization 
D)  Oogenesis 
E)  Gametogenesis

Question 10

Fertilization of plant gametes produces a ________________.

Accepted Answer

A)  zygote 
B)  gametophyte 
C)  spore 
D)  meiospore 
E)  multicellular haploid plant 
A)  zygote 
B)  gametophyte 
C)  spore 
D)  meiospore 
E)  multicellular haploid plant

Question 11

Chromosome segregation in anaphase I is consistent with which statement?

Accepted Answer

A)  The position where crossing over occurs is random. 
B)  The pole that any one chromosome moves toward is completely independent of the movement of the other 45 chromosomes in human cells. 
C)  Either partner of a homologous pair of chromosomes may end up at either spindle pole. 
D)  The sperm that fertilizes the egg is selected at random. 
E)  The number of crossing over events is random. 
A)  The position where crossing over occurs is random. 
B)  The pole that any one chromosome moves toward is completely independent of the movement of the other 45 chromosomes in human cells. 
C)  Either partner of a homologous pair of chromosomes may end up at either spindle pole. 
D)  The sperm that fertilizes the egg is selected at random. 
E)  The number of crossing over events is random.

Question 12

If a diploid organism has a genome consisting of four pairs of homologous chromosomes,it can produce ____ different combinations of maternal and paternal chromosomes in gametes (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 13

Which phase(s)of meiosis occur in a similar manner to mitosis?

Accepted Answer

A)  Prophase I and Prophase II 
B)  Prophase I, Metaphase I, Anaphase I. 
C)  Prophase II, Metaphase II, Anaphase II, Telophase II 
D)  Prophase I, Metaphase, I, Prophase II, Metaphase II 
E)  Prophase I, Anaphase I 
A)  Prophase I and Prophase II 
B)  Prophase I, Metaphase I, Anaphase I. 
C)  Prophase II, Metaphase II, Anaphase II, Telophase II 
D)  Prophase I, Metaphase, I, Prophase II, Metaphase II 
E)  Prophase I, Anaphase I

Question 14

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)  the number of chromosomes allotted to each daughter cell must be split in fourths 
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)  the number of chromosomes allotted to each daughter cell must be split in fourths

Question 15

With __________,offspring inherit the same number and kinds of genes from one parent.

Accepted Answer

asexual re

Question 16

Figure 12.7
  
-The accompanying illustration shows one possible outcome of the random alignment of homologous chromosomes at metaphase I.How many OTHER possible arrangements exist?

Accepted Answer

A)  None 
B)  One 
C)  Two 
D)  Seven 
E)  Eight 
A)  None 
B)  One 
C)  Two 
D)  Seven 
E)  Eight

Question 17

Figure 12.4
  
-The cell in the accompanying 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 18

The figure above represents ___________________.

Accepted Answer

A)  individual genes from an asexual worm 
B)  maternal chromosomes that are identical 
C)  paternal chromosomes that are identical 
D)  homologous chromosomes 
E)  nonhomologous chromosomes 
A)  individual genes from an asexual worm 
B)  maternal chromosomes that are identical 
C)  paternal chromosomes that are identical 
D)  homologous chromosomes 
E)  nonhomologous chromosomes

Question 19

Match the term to the correct description.
-Chromosomes are aligned midway between the spindle poles.

Accepted Answer

A) Prophase II 
B) Metaphase I 
C) Telophase II 
D) Meiosis II 
A) Prophase II 
B) Metaphase I 
C) Telophase II 
D) Meiosis II

Question 20

Meiosis typically results in the production of _____________________.

Accepted Answer

A)  two diploid cells 
B)  four diploid cells 
C)  four haploid cells 
D)  two haploid cells 
E)  one triploid cell 
A)  two diploid cells 
B)  four diploid cells 
C)  four haploid cells 
D)  two haploid cells 
E)  one triploid cell

Exam 12: Meiosis and Sexual Reproduction

Which action is unable to produce variation?

Which statement correctly describes human chromosomes after meiosis I?

____________________ reproduction produces clones of the parent.

Crossing over occurs during _________________.

In comparing mitosis and meiosis,which statement is true?

Sexual reproduction in animals starts with diploid ________ cells that form haploid __________

At __________,the fusion of two gametes produces a(n)__________.

Some of the stages of meiosis are listed below. For the following statements, select the best choice of these stages. -Recombination via crossing over occurs during this stage.

After meiosis,what process restores the chromosome number in diploid individuals?

Fertilization of plant gametes produces a ________________.

Chromosome segregation in anaphase I is consistent with which statement?

If a diploid organism has a genome consisting of four pairs of homologous chromosomes,it can produce ____ different combinations of maternal and paternal chromosomes in gametes (disregarding crossing over).

Which phase(s)of meiosis occur in a similar manner to mitosis?

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

With __________,offspring inherit the same number and kinds of genes from one parent.

Figure 12.7 -The accompanying illustration shows one possible outcome of the random alignment of homologous chromosomes at metaphase I.How many OTHER possible arrangements exist?

Figure 12.4 -The cell in the accompanying illustration is in ____.

The figure above represents ___________________.

Match the term to the correct description. -Chromosomes are aligned midway between the spindle poles.

Meiosis typically results in the production of _____________________.

Invitation to Biology

Life's Chemical Bases

Molecules of Life

Cell Structure

Ground Rules of Metabolism

Where it Starts—Photosynthesis

How Cells Release Chemical Energy

DNA Structure and Function

From DNA to Protein

Control of Gene Expression

How Cells Reproduce

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Studying and Manipulating Genomes

Evidence of Evolution

Processes of Evolution

Organizing Information about Species

Life's Origin and Early Evolution

Viruses, Bacteria, and Archaea

Protists: The Simplest Eukaryotes

The Land Plants

Fungi

Animal Evolution: The Invertebrates

Animal Evolution: The Chordates

Human Evolution

Plant Tissues

Plant Nutrition and Transport

Life Cycles of Flowering Plants

Communication Strategies in Plants

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Structural Support and Movement

Circulation

Immunity

Respiration

Digestion and Nutrition

Maintaining the Internal Environment

Animal Reproductive System

Animal Development

Animal Behavior

Population Ecology

Community Ecology

Ecosystems

The Biosphere

Human Impacts on the Biosphere

Filters

Sexual reproduction in animals starts with diploid cells that form haploid __

At ,the fusion of two gametes produces a(n).