Question 1

A zygote is

Accepted Answer

A)   a haploid cell.
B)   a gamete.
C)   a direct product of meiosis.
D)   a diploid cell.
E)   All answers are correct.

Question 2

Nondisjunction may cause

Accepted Answer

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

Human diploid 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 5

Chromosomes that look alike and carry the same genes are

Accepted Answer

A)   the X and Y chromosome.
B)   heterologous chromosomes.
C)   homologous chromosomes.
D)   found in females only.
E)   found in males only.

Question 6

Meiosis generates genetic variability by crossing over of homologous chromosomes in haploid somatic cells.

Accepted Answer

A) True 
 B)False

Question 7

Mitosis occurs in somatic cells throughout life.

Accepted Answer

A) True 
 B)False

Question 8

A diploid germ cell will produce cells with half the number of chromosomes,haploid cells,in

Accepted Answer

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

Question 9

The Y chromosome

Accepted Answer

A)   is larger than the X chromosome.
B)   contains more genes than the X chromosome.
C)   is the same size as the X chromosome.
D)   is smaller than the X chromosome.
E)   is genetically identical to the X chromosome.

Question 10

A cell having one or more complete sets of extra chromosomes

Accepted Answer

A)   cannot be produced by meiosis.
B)   cannot participate in fertilization.
C)   is polyploid.
D)   is haploid.
E)   is dizygotic.

Question 11

Genetic variability will not occur among offspring if random alignment does not occur during anaphase I of meiosis.

Accepted Answer

A) True 
 B)False

Question 12

Researchers exposed the microscopic roundworm, Caenorhabditis elegans,to disease causing bacteria.The roundworm can reproduce either asexually or sexually. In the presence of live bacteria,more roundworms reproduced sexually,and the resulting offspring were

Accepted Answer

A)   unique, giving the roundworms a better chance of survival.
B)   identical, giving the roundworms a better chance for survival.
C)   identical, giving the bacteria a greater chance to kill the entire round worm population.
D)   unique, giving the roundworms a more energy-conserving type of reproduction.
E)   All of the answer choices are correct.

Question 13

Identical twins result from a single fertilization to form a zygote,which then splits in half.

Accepted Answer

A) True 
 B)False

Question 14

Genetic variability will not occur among offspring if crossing over does not occur during prophase I of meiosis.

Accepted Answer

A) True 
 B)False

Question 15

When a diploid germ cell in a male goes through meiosis,it will generate

Accepted Answer

A)   two haploid cells.
B)   four diploid cells.
C)   two diploid cells.
D)   four haploid cells.
E)   This is not possible.

Question 16

The chromosomal designation for a human female is

Accepted Answer

A)   XYY.
B)   XY.
C)   YY.
D)   XX.
E)   No answer is correct.

Question 17

The process by which homologous chromosomes exchange genetic material

Accepted Answer

A)   is crossing over.
B)   is random fertilization.
C)   occurs only in bacteria.
D)   occurs only in animals.
E)   is independent assortment.

Question 18

If a diploid cell goes through mitosis it will generate

Accepted Answer

A)   four haploid cells.
B)   two diploid cells.
C)   two haploid cells.
D)   four diploid cells.
E)   This is not possible.

Exam 9: Sexual Reproduction and Meiosis

Human diploid cells have

Correct Answer
verified

The Y chromosome

Correct Answer
verified

The chromosomal designation for a human female is

Correct Answer
verified

In meiosis,homologous chromosomes align next to one another during

Correct Answer
verified

If a diploid cell goes through mitosis it will generate

Correct Answer
verified

Meiosis generates genetic variability by crossing over of homologous chromosomes in haploid somatic cells.

Correct Answer
verified

Mitosis occurs in somatic cells throughout life.

Correct Answer
verified

A zygote is

Correct Answer
verified

Chromosomes that look alike and carry the same genes are

Correct Answer
verified

Genetic variability will not occur among offspring if random alignment does not occur during anaphase I of meiosis.

Correct Answer
verified

Identical twins result from a single fertilization to form a zygote,which then splits in half.

Correct Answer
verified

The process by which homologous chromosomes exchange genetic material

Correct Answer
verified

A cell having one or more complete sets of extra chromosomes

Correct Answer
verified

Genetic variability will not occur among offspring if crossing over does not occur during prophase I of meiosis.

Correct Answer
verified

A diploid germ cell will produce cells with half the number of chromosomes,haploid cells,in

Correct Answer
verified

Nondisjunction may cause

Correct Answer
verified

Researchers exposed the microscopic roundworm, Caenorhabditis elegans,to disease causing bacteria.The roundworm can reproduce either asexually or sexually. In the presence of live bacteria,more roundworms reproduced sexually,and the resulting offspring were

Correct Answer
verified

When a diploid germ cell in a male goes through meiosis,it will generate

Correct Answer
verified

Exam 9: Sexual Reproduction and Meiosis

Human diploid cells have

Correct AnswerverifiedShow Answer

The Y chromosome

Correct AnswerverifiedShow Answer

The chromosomal designation for a human female is

Correct AnswerverifiedShow Answer

In meiosis,homologous chromosomes align next to one another during

Correct AnswerverifiedShow Answer

If a diploid cell goes through mitosis it will generate

Correct AnswerverifiedShow Answer

Meiosis generates genetic variability by crossing over of homologous chromosomes in haploid somatic cells.

Correct AnswerverifiedShow Answer

Mitosis occurs in somatic cells throughout life.

Correct AnswerverifiedShow Answer

A zygote is

Correct AnswerverifiedShow Answer

Chromosomes that look alike and carry the same genes are

Correct AnswerverifiedShow Answer

Genetic variability will not occur among offspring if random alignment does not occur during anaphase I of meiosis.

Correct AnswerverifiedShow Answer

Identical twins result from a single fertilization to form a zygote,which then splits in half.

Correct AnswerverifiedShow Answer

The process by which homologous chromosomes exchange genetic material

Correct AnswerverifiedShow Answer

A cell having one or more complete sets of extra chromosomes

Correct AnswerverifiedShow Answer

Genetic variability will not occur among offspring if crossing over does not occur during prophase I of meiosis.

Correct AnswerverifiedShow Answer

A diploid germ cell will produce cells with half the number of chromosomes,haploid cells,in

Correct AnswerverifiedShow Answer

Nondisjunction may cause

Correct AnswerverifiedShow Answer

Researchers exposed the microscopic roundworm, Caenorhabditis elegans,to disease causing bacteria.The roundworm can reproduce either asexually or sexually. In the presence of live bacteria,more roundworms reproduced sexually,and the resulting offspring were

Correct AnswerverifiedShow Answer

When a diploid germ cell in a male goes through meiosis,it will generate

Correct AnswerverifiedShow Answer

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