Question 1

Nondisjunction may cause

Accepted Answer

A)  trisomy 21.
B)  Turner syndrome.
C)  Jacobs syndrome.
D)  All answers are correct.
E)  Klinefelter syndromE. D

Question 2

Sexual reproduction includes

Accepted Answer

A)  mitosis,gamete formation,and fertilization.
B)  mitosis,meiosis,and gamete formation.
C)  meiosis,gamete formation,and fertilization.
D)  mitosis,fertilization,and meiosis.
E)  No answer is correct.

Question 3

In meiosis,homologous chromosomes align next to one another during

Accepted Answer

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

Question 4

The process that merges the gametes from two parents is

Accepted Answer

A)  fertilization.
B)  meiosis.
C)  mitosis.
D)  mutation.
E)  conjugation.

Question 5

For a plant to produce diploid sperm and egg ____ must occur during _____.

Accepted Answer

A)  nondisjunction,mitosis
B)  independent assortment,meiosis
C)  nondisjunction,meiosis
D)  independent assortment,mitosis
E)  independent assortment,fertilization C

Question 6

Human cells have

Accepted Answer

A)  23 pairs of chromosomes.
B)  23 chromosomes.
C)  46 pairs of chromosomes.
D)  2 pairs of sex chromosomes.
E)  1 pair of autosomes.

Question 7

What two processes results in genetically different products?

Accepted Answer

A)  mitosis and meiosis
B)  mitosis and asexual reproduction
C)  meiosis and asexual reproduction
D)  meiosis and sexual reproduction
E)  mitosis and sexual reproduction

Question 8

The chromosomal designation for a human male is

Accepted Answer

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

Question 9

A diploid germ cell will produce cells that have reduced the chromosome number by half,generating four haploid nuclei in

Accepted Answer

A)  fertilization.
B)  mitosis.
C)  meiosis.
D)  replication.
E)  mutation.

Question 10

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.

Question 11

Why is it essential that meiosis produce haploid cells?

Accepted Answer

A)  so that the number of chromosomes will double each generation
B)  to produce haploid offspring
C)  to prevent the number of chromosomes from doubling each generation
D)  to produce diploid gametes
E)  to allow asexual reproduction C

Question 12

If a haploid cell goes through meiosis it will generate

Accepted Answer

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

Question 13

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.

Question 14

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

Question 15

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)  called sex chromosomes.
E)  No answer is correct.

Question 16

2n is an abbreviation for

Accepted Answer

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

Question 17

If human gametes were diploid

Accepted Answer

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

Question 18

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

Question 19

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.

Question 20

What creates genetically different offspring in both asexual and sexual reproduction?

Accepted Answer

A)  mutations
B)  mitosis
C)  meiosis
D)  mutations and mitosis
E)  mitosis and meiosis

Exam 9: Sexual Reproduction and Meiosis

Nondisjunction may cause

Correct AnswerverifiedD

Sexual reproduction includes

Correct AnswerverifiedShow Answer

In meiosis,homologous chromosomes align next to one another during

Correct AnswerverifiedShow Answer

The process that merges the gametes from two parents is

Correct AnswerverifiedShow Answer

For a plant to produce diploid sperm and egg ____ must occur during _____.

Correct AnswerverifiedC

Human cells have

Correct AnswerverifiedShow Answer

What two processes results in genetically different products?

Correct AnswerverifiedShow Answer

The chromosomal designation for a human male is

Correct AnswerverifiedShow Answer

A diploid germ cell will produce cells that have reduced the chromosome number by half,generating four haploid nuclei in

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

Why is it essential that meiosis produce haploid cells?

Correct AnswerverifiedC

If a haploid cell goes through meiosis it will generate

Correct AnswerverifiedShow Answer

In meiosis,DNA replicates during

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

2n is an abbreviation for

Correct AnswerverifiedShow Answer

If human gametes were diploid

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

If a haploid cell goes through mitosis it will generate

Correct AnswerverifiedShow Answer

What creates genetically different offspring in both asexual and sexual reproduction?

Correct AnswerverifiedShow Answer

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D

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For a plant to produce diploid sperm and egg must occur during _.

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C

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C

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