Question 1

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.F) A) and E)
G) C) and D)

Question 2

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 reproductionF) B) and E)
G) A) and E)

Question 3

Sexual reproduction and meiosis generate genetic variability by

Accepted Answer

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

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.F) B) and C)
G) A) and E)

Question 5

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.F) B) and E)
G) B) and D)

Question 6

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.F) All of the above
G) A) and D)

Question 7

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.F) B) and D)
G) B) and E)

Question 8

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 overF) B) and E)
G) B) and D)

Question 9

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)   mutationF) A) and E)
G) D) and E)

Question 10

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

Accepted Answer

A) True 
 B)False

Question 11

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.F) A) and D)
G) B) and E)

Question 12

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

Accepted Answer

A) True 
 B)False

Question 13

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.F) A) and B)
G) A) and C)

Question 14

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.F) A) and C)
G) A) and B)

Question 15

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.F) A) and C)
G) B) and D)

Question 16

2n is an abbreviation for

Accepted Answer

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

Question 17

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.F) A) and B)
G) None of the above

Question 18

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.F) A) and B)
G) A) and C)

Question 19

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.F) B) and D)
G) A) and C)

Question 20

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 condensationF) A) and B)
G) A) and D)

Exam 9: Sexual Reproduction and Meiosis

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

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Diploid means having

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

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

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

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What is an advantage of sexual reproduction over asexual reproduction?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Sexual reproduction and meiosis generate genetic variability by

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

2n is an abbreviation for

Correct AnswerverifiedShow Answer

Meiosis is a process that produces

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Genetic information is passed from one generation to the next through

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

In the presence of parasites,a hermaphroditic roundworm will reproduce

Correct AnswerverifiedShow Answer

In meiosis,DNA replicates during

Correct AnswerverifiedShow Answer

If a haploid cell goes through mitosis it will generate

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

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

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