Question 1

What is an advantage of sexual reproduction over asexual reproduction?

Accepted Answer

A)  genetic variability during an ecological disaster 
B)  genetic variability when the environment is stable 
C)  faster reproduction 
D)  requirement of less energy 
E)  simpler form of reproduction 
A)  genetic variability during an ecological disaster 
B)  genetic variability when the environment is stable 
C)  faster reproduction 
D)  requirement of less energy 
E)  simpler form of reproduction

Question 2

If a human zygote has either 45 or 47 chromosomes it was caused by random fertilization.

Accepted Answer

A) True 
 B)False

Question 3

Haploid germ cells undergo meiosis,including crossing over,to produce sex cells.

Accepted Answer

A) True 
 B)False

Question 4

Meiosis is a process that produces

Accepted Answer

A)  sperm cells. 
B)  egg cells. 
C)  gametes. 
D)  haploid cells. 
E)  All answers are correct. 
A)  sperm cells. 
B)  egg cells. 
C)  gametes. 
D)  haploid cells. 
E)  All answers are correct.

Question 5

What process leads to siblings only sharing,on average,25% of their genetic material?

Accepted Answer

A)  asexual reproduction 
B)  semiconservative replication 
C)  random fertilization 
D)  random orientation 
E)  mutation 
A)  asexual reproduction 
B)  semiconservative replication 
C)  random fertilization 
D)  random orientation 
E)  mutation

Question 6

Diploid means having

Accepted Answer

A)  one homologous set of chromosomes. 
B)  three homologous sets of chromosomes. 
C)  two homologous sets of chromosomes. 
D)  two chromosomes in each somatic cell. 
E)  two chromosomes in each gamete. 
A)  one homologous set of chromosomes. 
B)  three homologous sets of chromosomes. 
C)  two homologous sets of chromosomes. 
D)  two chromosomes in each somatic cell. 
E)  two chromosomes in each gamete.

Question 7

Sexual reproduction is important to the survival of a species in a changing environment because

Accepted Answer

A)  it requires less overall energy expenditure than asexual reproduction. 
B)  it produces genetically different individuals. 
C)  it requires only one individual. 
D)  it produces genetically identical individuals. 
E)  All answers are correct. 
A)  it requires less overall energy expenditure than asexual reproduction. 
B)  it produces genetically different individuals. 
C)  it requires only one individual. 
D)  it produces genetically identical individuals. 
E)  All answers are correct.

Question 8

In meiosis,DNA replicates during

Accepted Answer

A)  prophase I. 
B)  prophase II. 
C)  interphase prior to meiosis II. 
D)  interphase prior to meiosis I. 
E)  both prophase I and prophase II. 
A)  prophase I. 
B)  prophase II. 
C)  interphase prior to meiosis II. 
D)  interphase prior to meiosis I. 
E)  both prophase I and prophase II.

Question 9

If you were looking at a set of human chromosomes under the microscope,you would know when you saw the X chromosome in part because it is

Accepted Answer

A)  larger than the Y chromosome. 
B)  smaller than the Y chromosome. 
C)  the same size as the Y chromosome. 
D)  genetically identical to the Y chromosome. 
E)  larger and genetically identical to the Y chromosome. 
A)  larger than the Y chromosome. 
B)  smaller than the Y chromosome. 
C)  the same size as the Y chromosome. 
D)  genetically identical to the Y chromosome. 
E)  larger and genetically identical to the Y chromosome.

Question 10

Sexual reproduction and meiosis generate genetic variability by

Accepted Answer

A)  random fertilization. 
B)  crossing over. 
C)  random alignment. 
D)  All answers are correct. 
A)  random fertilization. 
B)  crossing over. 
C)  random alignment. 
D)  All answers are correct.

Question 11

If a haploid cell goes through mitosis it will generate

Accepted Answer

A)  two haploid cells. 
B)  two diploid cells. 
C)  four haploid cells. 
D)  four diploid cells. 
E)  No answer is correct. 
A)  two haploid cells. 
B)  two diploid cells. 
C)  four haploid cells. 
D)  four diploid cells. 
E)  No answer is correct.

Question 12

The human chromosomes that do not determine an individual's sex are

Accepted Answer

A)  not found in pairs. 
B)  the "X" and "Y" chromosomes. 
C)  autosomes. 
D)  sex chromosomes. 
E)  No answer is correct. 
A)  not found in pairs. 
B)  the "X" and "Y" chromosomes. 
C)  autosomes. 
D)  sex chromosomes. 
E)  No answer is correct.

Question 13

Genes A and B are on the same chromosome.If a person has one chromosome with the alleles AB and a second chromosome with the alleles ab,how could they produce a gamete with a chromosome containing the alleles Ab or aB?

Accepted Answer

A)  independent assortment 
B)  random fertilization 
C)  mitosis 
D)  fragmentation of the chromosome 
E)  crossing over 
A)  independent assortment 
B)  random fertilization 
C)  mitosis 
D)  fragmentation of the chromosome 
E)  crossing over

Question 14

2n is an abbreviation for

Accepted Answer

A)  diploid. 
B)  gametes. 
C)  haploid. 
D)  mitosis. 
E)  meiosis. 
A)  diploid. 
B)  gametes. 
C)  haploid. 
D)  mitosis. 
E)  meiosis.

Question 15

Meiotic cell division replicates a cell's DNA ________ and then divides ________.

Accepted Answer

A)  twice; once 
B)  once; twice 
C)  twice; twice 
D)  once; once 
E)  No answer is correct. 
A)  twice; once 
B)  once; twice 
C)  twice; twice 
D)  once; once 
E)  No answer is correct.

Question 16

If you mate a donkey (2n = 62)with a horse (2n = 64)you get a mule.Mules are sterile and cannot produce gametes by meiosis because they

Accepted Answer

A)  contain too few chromosomes. 
B)  have an odd number of chromosomes. 
C)  have an even number of chromosomes. 
D)  contain too many chromosomes. 
E)  lack genes that are essential for life. 
A)  contain too few chromosomes. 
B)  have an odd number of chromosomes. 
C)  have an even number of chromosomes. 
D)  contain too many chromosomes. 
E)  lack genes that are essential for life.

Question 17

If you were told that you would get extra credit for finding a model showing chromsomes separating while sister chromatids were still attached,you would look for a model of

Accepted Answer

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

Question 18

In the presence of parasites,a hermaphroditic roundworm will reproduce

Accepted Answer

A)  sexually, producing varied offspring 
B)  sexually, producing identical offspring 
C)  asexually, producing identical offspring 
D)  asexually, producing varied offspring 
E)  None of the above are correct. 
A)  sexually, producing varied offspring 
B)  sexually, producing identical offspring 
C)  asexually, producing identical offspring 
D)  asexually, producing varied offspring 
E)  None of the above are correct.

Question 19

Which of the following will occur in meiosis but not in mitosis?

Accepted Answer

A)  metaphase 
B)  cytokinesis 
C)  crossing over 
D)  DNA replication 
E)  chromosome condensation 
A)  metaphase 
B)  cytokinesis 
C)  crossing over 
D)  DNA replication 
E)  chromosome condensation

Question 20

Genetic information is passed from one generation to the next through

Accepted Answer

A)  DNA. 
B)  asexual reproduction. 
C)  sexual reproduction. 
D)  gametes. 
E)  All answers are correct. 
A)  DNA. 
B)  asexual reproduction. 
C)  sexual reproduction. 
D)  gametes. 
E)  All answers are correct.

Exam 9: Sexual Reproduction and Meiosis

What is an advantage of sexual reproduction over asexual reproduction?

If a human zygote has either 45 or 47 chromosomes it was caused by random fertilization.

Haploid germ cells undergo meiosis,including crossing over,to produce sex cells.

Meiosis is a process that produces

What process leads to siblings only sharing,on average,25% of their genetic material?

Diploid means having

Sexual reproduction is important to the survival of a species in a changing environment because

In meiosis,DNA replicates during

If you were looking at a set of human chromosomes under the microscope,you would know when you saw the X chromosome in part because it is

Sexual reproduction and meiosis generate genetic variability by

If a haploid cell goes through mitosis it will generate

The human chromosomes that do not determine an individual's sex are

Genes A and B are on the same chromosome.If a person has one chromosome with the alleles AB and a second chromosome with the alleles ab,how could they produce a gamete with a chromosome containing the alleles Ab or aB?

2n is an abbreviation for

Meiotic cell division replicates a cell's DNA ________ and then divides ________.

If you mate a donkey (2n = 62)with a horse (2n = 64)you get a mule.Mules are sterile and cannot produce gametes by meiosis because they

If you were told that you would get extra credit for finding a model showing chromsomes separating while sister chromatids were still attached,you would look for a model of

In the presence of parasites,a hermaphroditic roundworm will reproduce

Which of the following will occur in meiosis but not in mitosis?

Genetic information is passed from one generation to the next through

The Scientific Study of Life

The Chemistry of Life

Cells

The Energy of Life

Photosynthesis

Respiration and Fermentation

DNA Structure and Gene Function

DNA Replication,Binary Fission,and Mitosis

Patterns of Inheritance

DNA Technology

Forces of Evolutionary Change

Evidence of Evolution

Speciation and Extinction

Evolution and Diversity of Microbial Life

Evolution and Diversity of Plants

Evolution and Diversity of Animals

Populations

Communities and Ecosystems

Preserving Biodiversity

Plant Form and Function

Reproduction and Development of Flowering Plants

Animal Tissues and Organ Systems

The Nervous System and the Senses

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Animal Reproduction and Development

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Meiotic cell division replicates a cell's DNA and then divides .