Question 1

A female missing an X chromosome (XO)would have Turner syndrome.

Accepted Answer

A) True 
 B)False

Question 2

Identical twins result from a single fertilization to form a zygote,which then splits into two genetically identical embryos.

Accepted Answer

A) True 
 B)False

Question 3

If a chromosome in one of your bone cells becomes mutated,you will not pass this mutation onto your children because

Accepted Answer

A)   germ cells cannot undergo mitosis.
B)   germ cells cannot undergo meiosis.
C)   somatic cells cannot undergo mitosis.
D)   somatic cells cannot undergo meiosis.E) A) and B)
F) B) and D)

Question 4

In humans,germ cells are located in the

Accepted Answer

A)   ovaries and bone marrow.
B)   bone marrow.
C)   ovaries.
D)   testes.
E)   testes and ovaries.F) C) and E)
G) A) and D)

Question 5

The chromosomal combination for a human male is

Accepted Answer

A)   YY.
B)   XXX.
C)   XX.
D)   XO.
E)   XY.F) A) and E)
G) A) and D)

Question 6

In meiosis,chromosomes containing sister chromatids (not homologous chromosomes) align along the center of the cell during

Accepted Answer

A)   prophase I.
B)   metaphase II.
C)   metaphase I.
D)   interphase II.
E)   prophase II.F) A) and E)
G) C) and D)

Question 7

Suppose a researcher halts a cell undergoing mitosis in interphase.The chromosomes are in the 2n state,

Accepted Answer

A)   with the diploid chromosome set viewable in a karyotype.
B)   easily viewable in a karyotype.
C)   because they have already formed gametes.
D)   meaning the cell is diploid.
E)   because the cell is haploid.F) D) and E)
G) A) and B)

Question 8

In humans,specialized cells that produce gametes are

Accepted Answer

A)   germ cells.
B)   All of the answer choices are correct.
C)   somatic cells.
D)   sperm cells.
E)   egg cells.F) A) and D)
G) C) and D)

Question 9

In human male cells,the only pair of unmatched homologous chromosomes

Accepted Answer

A)   All of the answer choices are correct.
B)   pair up during prophase I.
C)   are sex chromosomes.
D)   contain different genes.
E)   are the X and Y chromosomes.F) D) and E)
G) B) and E)

Question 10

Nondisjunction may cause

Accepted Answer

A)   Klinefelter syndrome.
B)   Turner syndrome.
C)   trisomy 21.
D)   All of the answer choices are correct.
E)   Jacobs syndrome.F) A) and C)
G) C) and D)

Question 11

Without genetic diversity,a population might more easily fall victim to parasites and pathogens.

Accepted Answer

A) True 
 B)False

Question 12

If human gametes were diploid

Accepted Answer

A)   the products of fertilization would have more chromosomes than their parents.
B)   the products of fertilization would have fewer chromosomes than their parents.
C)   the products of fertilization would have the same number of chromosomes as their parents.
D)   the embryo would be diploid.
E)   fertilization could not occur.F) A) and E)
G) A) and D)

Question 13

In plants,haploid gametophytes produce gametes by

Accepted Answer

A)   non-disjunction.
B)   mitosis.
C)   meiosis.
D)   sporulation.
E)   fertilization.F) A) and B)
G) B) and C)

Question 14

If a human zygote has either 45 or 47 chromosomes it might be assumed that this was due to nondisjunction.

Accepted Answer

A) True 
 B)False

Question 15

The number of chromosomes in a daughter cell produced by meiosis is the same as the number of chromosomes in the parent cell.

Accepted Answer

A) True 
 B)False

Question 16

Why does sexual reproduction produce more genetic variability in a population than asexual reproduction?

Accepted Answer

A)   Organisms arising from sexual reproduction can change their genetic material in response to environmental changes.
B)   Offspring are identical to one parent, when produced through sexual reproduction.
C)   Sexually reproducing organisms mutate more rapidly during DNA replication than asexually reproducing organisms.
D)   Sexually reproducing organisms mix parental genetics in addition to crossing over, random alignment and other modifications.
E)   In sexual reproduction, the parents exchange genetic material of the nuclei, thus increasing their variability.F) A) and C)
G) A) and E)

Question 17

In meiosis II,cytokinesis results in the production of

Accepted Answer

A)   two haploid daughter cells.
B)   two diploid daughter cells.
C)   four haploid daughter cells.
D)   four diploid daughter cells.
E)   one daughter cell identical to the parent cell that underwent meiosis.F) A) and B)
G) A) and C)

Question 18

In meiosis,homologous chromosomes pair up,allowing crossing over to occur.

Accepted Answer

A) True 
 B)False

Question 19

If a haploid cell goes through meiosis,it will generate

Accepted Answer

A)   four diploid cells.
B)   two diploid cells.
C)   two haploid cells.
D)   four haploid cells.
E)   This isn't possible.F) None of the above
G) B) and C)

Question 20

The movement of a section of DNA from a chromosome to a non-homologous chromosome is an example of

Accepted Answer

A)   translocation during meiosis.
B)   nondisjunction during meiosis.
C)   crossing over during meiosis.
D)   translocation during mitosis.
E)   random alignment during mitosis.F) A) and E)
G) A) and D)

Exam 9: Sexual Reproduction and Meiosis

In plants,haploid gametophytes produce gametes by

Correct AnswerverifiedShow Answer

In humans,germ cells are located in the

Correct AnswerverifiedShow Answer

Without genetic diversity,a population might more easily fall victim to parasites and pathogens.

Correct AnswerverifiedShow Answer

A female missing an X chromosome (XO)would have Turner syndrome.

Correct AnswerverifiedShow Answer

Identical twins result from a single fertilization to form a zygote,which then splits into two genetically identical embryos.

Correct AnswerverifiedShow Answer

Suppose a researcher halts a cell undergoing mitosis in interphase.The chromosomes are in the 2n state,

Correct AnswerverifiedShow Answer

The number of chromosomes in a daughter cell produced by meiosis is the same as the number of chromosomes in the parent cell.

Correct AnswerverifiedShow Answer

In meiosis,homologous chromosomes pair up,allowing crossing over to occur.

Correct AnswerverifiedShow Answer

The movement of a section of DNA from a chromosome to a non-homologous chromosome is an example of

Correct AnswerverifiedShow Answer

Why does sexual reproduction produce more genetic variability in a population than asexual reproduction?

Correct AnswerverifiedShow Answer

If human gametes were diploid

Correct AnswerverifiedShow Answer

If a human zygote has either 45 or 47 chromosomes it might be assumed that this was due to nondisjunction.

Correct AnswerverifiedShow Answer

The chromosomal combination for a human male is

Correct AnswerverifiedShow Answer

If a chromosome in one of your bone cells becomes mutated,you will not pass this mutation onto your children because

Correct AnswerverifiedShow Answer

In human male cells,the only pair of unmatched homologous chromosomes

Correct AnswerverifiedShow Answer

If a haploid cell goes through meiosis,it will generate

Correct AnswerverifiedShow Answer

In meiosis,chromosomes containing sister chromatids (not homologous chromosomes) align along the center of the cell during

Correct AnswerverifiedShow Answer

In meiosis II,cytokinesis results in the production of

Correct AnswerverifiedShow Answer

In humans,specialized cells that produce gametes are

Correct AnswerverifiedShow Answer

Nondisjunction may cause

Correct AnswerverifiedShow Answer

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