Question 1

In mitosis,homologous chromosomes do not pair up.

Accepted Answer

A) True 
 B)False  True

Question 2

Mitotic cell division creates identical copies by replicating a cell's DNA __________ and then dividing ____________

Accepted Answer

A)  twice; twice. 
B)  None of the answer choices are correct. 
C)  once; once. 
D)  twice; once. 
E)  once; twice. 
A)  twice; twice. 
B)  None of the answer choices are correct. 
C)  once; once. 
D)  twice; once. 
E)  once; twice. C

Question 3

A diploid germ cell reduces its chromosome number by half to generate four haploid nuclei in

Accepted Answer

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

Question 4

The human chromosomes that do not determine whether an individual is male or female are

Accepted Answer

A)  called sex chromosomes. 
B)  None of the answer choices are correct. 
C)  the X and Y chromosomes. 
D)  not found in pairs. 
E)  autosomes. 
A)  called sex chromosomes. 
B)  None of the answer choices are correct. 
C)  the X and Y chromosomes. 
D)  not found in pairs. 
E)  autosomes.

Question 5

In meiosis,paired homologs align down the center of the cell during

Accepted Answer

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

Question 6

The chromosomal combination for a human female is

Accepted Answer

A)  YY. 
B)  XY. 
C)  XYY. 
D)  None of the answer choices are correct. 
E)  XX. 
A)  YY. 
B)  XY. 
C)  XYY. 
D)  None of the answer choices are correct. 
E)  XX.

Question 7

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

Accepted Answer

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

Question 8

Genes A and B are on the same chromosome.What gametes could an AABB individual produce,if no crossing over,nondisjunction or other abnormalities in meiosis occur?

Accepted Answer

A)  B 
B)  AABB 
C)  AB 
D)  A 
E)  AAB 
A)  B 
B)  AABB 
C)  AB 
D)  A 
E)  AAB

Question 9

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 10

What is the major advantage of sexual reproduction over asexual reproduction?

Accepted Answer

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

Question 11

An example of a haploid cell is a

Accepted Answer

A)  sperm cell. 
B)  stem cell. 
C)  zygote. 
D)  All of the answer choices are correct. 
E)  skin cell. 
A)  sperm cell. 
B)  stem cell. 
C)  zygote. 
D)  All of the answer choices are correct. 
E)  skin cell.

Question 12

In biology lab,you are observing specimens of muscle cells and nerve cells,as examples of

Accepted Answer

A)  germ cells. 
B)  gametes. 
C)  somatic cells. 
D)  zygotes. 
E)  haploid cells. 
A)  germ cells. 
B)  gametes. 
C)  somatic cells. 
D)  zygotes. 
E)  haploid cells.

Question 13

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

Accepted Answer

A) True 
 B)False

Question 14

Figuer:  
-Based on this figure,T.miscellus has arisen

Accepted Answer

A)  more than once with T. pratensis being the female parent. 
B)  only once with T. dubius being the female parent. 
C)  more than once with T. dubius being the female parent. 
D)  only once with T. pratensis being the female parent. 
E)  more than once with T. pratensis and T. dubius both providing female parents in the lineage. 
A)  more than once with T. pratensis being the female parent. 
B)  only once with T. dubius being the female parent. 
C)  more than once with T. dubius being the female parent. 
D)  only once with T. pratensis being the female parent. 
E)  more than once with T. pratensis and T. dubius both providing female parents in the lineage.

Question 15

A cell with one set of chromosomes would be termed a ________________ cell.

Accepted Answer

A)  sister 
B)  diploid 
C)  haploid 
D)  None of the answer choices are correct. 
E)  somatic 
A)  sister 
B)  diploid 
C)  haploid 
D)  None of the answer choices are correct. 
E)  somatic

Question 16

Alternate forms of the same gene

Accepted Answer

A)  do not occur in the same individual. 
B)  are sister chromatids. 
C)  do not exist. 
D)  are homologs. 
E)  are alleles. 
A)  do not occur in the same individual. 
B)  are sister chromatids. 
C)  do not exist. 
D)  are homologs. 
E)  are alleles.

Question 17

Figuer:   
-Tragopogon mirus is a hybrid of T.dubius and T.porrifolius.Based on the figure,T.mirus has

Accepted Answer

A)  24 chromosomes from T. porrifolius. 
B)  24 chromosomes from T. dubius and 24 chromosomes from T. porrifolius. 
C)  6 chromosomes from T. dubius and 6 chromosomes from T. porrifolius. 
D)  24 chromosomes from T. dubius. 
E)  12 chromosomes from T. dubius and 12 chromosomes from T. porrifolius. 
A)  24 chromosomes from T. porrifolius. 
B)  24 chromosomes from T. dubius and 24 chromosomes from T. porrifolius. 
C)  6 chromosomes from T. dubius and 6 chromosomes from T. porrifolius. 
D)  24 chromosomes from T. dubius. 
E)  12 chromosomes from T. dubius and 12 chromosomes from T. porrifolius.

Question 18

There are two divisions in meiosis resulting in four daughter cells.

Accepted Answer

A) True 
 B)False

Question 19

In contrast to human X and Y chromosomes,autosomes

Accepted Answer

A)  include the X and Y sex-associated chromosomes in humans. 
B)  are non-homologous, self-expressing chromosomes. 
C)  are homologous chromosomes found in both sexes. 
D)  are chromosomes that do not usually mutate during meiosis. 
E)  All of the answer choices are correct. 
A)  include the X and Y sex-associated chromosomes in humans. 
B)  are non-homologous, self-expressing chromosomes. 
C)  are homologous chromosomes found in both sexes. 
D)  are chromosomes that do not usually mutate during meiosis. 
E)  All of the answer choices are correct.

Question 20

The major characteristics that uniquely identify each chromosome in a karyotype are the

Accepted Answer

A)  size, number of telomeres, and banding pattern. 
B)  centromere position, banding pattern, and size. 
C)  sequence of nitrogen bases, types of proteins, and banding pattern. 
D)  position and orientation, types of proteins, and genes. 
E)  types of proteins, number of telomeres, and banding pattern. 
A)  size, number of telomeres, and banding pattern. 
B)  centromere position, banding pattern, and size. 
C)  sequence of nitrogen bases, types of proteins, and banding pattern. 
D)  position and orientation, types of proteins, and genes. 
E)  types of proteins, number of telomeres, and banding pattern.

Exam 9: Sexual Reproduction and Meiosis

In mitosis,homologous chromosomes do not pair up.

Mitotic cell division creates identical copies by replicating a cell's DNA __________ and then dividing ____________

A diploid germ cell reduces its chromosome number by half to generate four haploid nuclei in

The human chromosomes that do not determine whether an individual is male or female are

In meiosis,paired homologs align down the center of the cell during

The chromosomal combination for a human female is

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

Genes A and B are on the same chromosome.What gametes could an AABB individual produce,if no crossing over,nondisjunction or other abnormalities in meiosis occur?

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

What is the major advantage of sexual reproduction over asexual reproduction?

An example of a haploid cell is a

In biology lab,you are observing specimens of muscle cells and nerve cells,as examples of

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

Figuer: -Based on this figure,T.miscellus has arisen

A cell with one set of chromosomes would be termed a ________________ cell.

Alternate forms of the same gene

Figuer: -Tragopogon mirus is a hybrid of T.dubius and T.porrifolius.Based on the figure,T.mirus has

There are two divisions in meiosis resulting in four daughter cells.

In contrast to human X and Y chromosomes,autosomes

The major characteristics that uniquely identify each chromosome in a karyotype are the

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