Question 1

If the secondary oocyte is not fertilized,it does not complete meiosis II.

Accepted Answer

A) True 
 B)False  True

Question 2

Which of the following is not a stage of mitosis?

Accepted Answer

A)  interphase 
B)  prophase 
C)  metaphase 
D)  anaphase 
E)  telophase 
A)  interphase 
B)  prophase 
C)  metaphase 
D)  anaphase 
E)  telophase A

Question 3

In both spermatogenesis and oogenesis,one sperm/egg forms from one primary spermatocyte/oocyte.

Accepted Answer

A) True 
 B)False  False

Question 4

At what stage of mitosis do sister chromatids become full-fledged chromosomes?

Accepted Answer

A)  prophase 
B)  metaphase 
C)  anaphase 
D)  telophase 
E)  cytokinesis 
A)  prophase 
B)  metaphase 
C)  anaphase 
D)  telophase 
E)  cytokinesis

Question 5

How are Jacobs and Klinefelter syndromes alike?

Accepted Answer

A)  Both have only two X chromosomes. 
B)  Both have only two Y chromosomes. 
C)  Both have three sex chromosomes. 
D)  Both have one sex chromosome. 
E)  Both have only 45 chromosomes. 
A)  Both have only two X chromosomes. 
B)  Both have only two Y chromosomes. 
C)  Both have three sex chromosomes. 
D)  Both have one sex chromosome. 
E)  Both have only 45 chromosomes.

Question 6

Which phase of meiosis matches those of mitosis in regards to the events occurring in the cell?

Accepted Answer

A)  anaphase II and anaphase 
B)  anaphase I and prophase 
C)  metaphase I and prophase 
D)  telophase II and telophase 
E)  None of the phases of meiosis will match up with mitosis. 
A)  anaphase II and anaphase 
B)  anaphase I and prophase 
C)  metaphase I and prophase 
D)  telophase II and telophase 
E)  None of the phases of meiosis will match up with mitosis.

Question 7

Trisomy of which pair of chromosomes has the greatest chance of survival?

Accepted Answer

A)  XX 
B)  pair 13 
C)  pair 8 
D)  pair 3 
E)  pair 15 
A)  XX 
B)  pair 13 
C)  pair 8 
D)  pair 3 
E)  pair 15

Question 8

What are the two main divisions of the cell cycle?

Accepted Answer

A)  apoptosis and interphase 
B)  mitosis and cytokinesis 
C)  nucleus and cytoplasm 
D)  mitosis and meiosis 
E)  interphase and cell division 
A)  apoptosis and interphase 
B)  mitosis and cytokinesis 
C)  nucleus and cytoplasm 
D)  mitosis and meiosis 
E)  interphase and cell division

Question 9

In meiosis how many divisions occur and how many daughter cells are created?

Accepted Answer

A)  one, two 
B)  one, four 
C)  two, two 
D)  two, four 
E)  two, eight 
A)  one, two 
B)  one, four 
C)  two, two 
D)  two, four 
E)  two, eight

Question 10

Which division of meiosis is like mitosis?

Accepted Answer

A)  meiosis I 
B)  meiosis II 
C)  G1 
D)  S 
E)  G2 
A)  meiosis I 
B)  meiosis II 
C)  G1 
D)  S 
E)  G2

Question 11

Which of the following is associated with mental retardation in Down syndrome?

Accepted Answer

A)  elevated levels of purines in the blood 
B)  increased tendency toward leukemia 
C)  increased tendency toward cataracts 
D)  accelerated rate of aging 
E)  thickening of the muscles of the tongue 
A)  elevated levels of purines in the blood 
B)  increased tendency toward leukemia 
C)  increased tendency toward cataracts 
D)  accelerated rate of aging 
E)  thickening of the muscles of the tongue

Question 12

The products of meiosis I in spermatogenesis are

Accepted Answer

A)  primary spermatocytes. 
B)  secondary spermatocytes. 
C)  spermatids. 
D)  spermatazoa. 
E)  two identical cells. 
A)  primary spermatocytes. 
B)  secondary spermatocytes. 
C)  spermatids. 
D)  spermatazoa. 
E)  two identical cells.

Question 13

Suppose that nondisjunction occurs during meiosis II in oogenesis,and each of the resulting four cells is fertilized with a normal sperm (imagine four functional egg cells result from oogenesis).How many cells are normal and how many have a chromosomal trisomy?

Accepted Answer

A)  one, three 
B)  two, two 
C)  three, one 
D)  two, one 
E)  one, two 
A)  one, three 
B)  two, two 
C)  three, one 
D)  two, one 
E)  one, two

Question 14

Which cells cannot be used to produce a karyotype?

Accepted Answer

A)  white blood cells 
B)  red blood cells 
C)  epithelial cells 
D)  smooth muscle cells 
E)  skeletal muscle cells 
A)  white blood cells 
B)  red blood cells 
C)  epithelial cells 
D)  smooth muscle cells 
E)  skeletal muscle cells

Question 15

The amount of time the cell takes for interphase is approximately 1 hour,plus or minus about 5 minutes.

Accepted Answer

A) True 
 B)False

Question 16

At which stage of mitosis do you first see the chromosomes appearing?

Accepted Answer

A)  prophase 
B)  metaphase 
C)  anaphase 
D)  telophase 
E)  cytokinesis 
A)  prophase 
B)  metaphase 
C)  anaphase 
D)  telophase 
E)  cytokinesis

Question 17

If you are looking at a cell in which 2n = 16,and there appear to be 8 structures lined up at the metaphase plate,then you are looking at

Accepted Answer

A)  mitosis. 
B)  meiosis. 
C)  interphase. 
D)  G2. 
E)  G1. 
A)  mitosis. 
B)  meiosis. 
C)  interphase. 
D)  G2. 
E)  G1.

Question 18

How long does it take to proceed from prophase I to metaphase I in oogenesis?

Accepted Answer

A)  One follows directly after the other. 
B)  There is usually a pause of about 1 hour. 
C)  It varies, but on the order of years. 
D)  There is a pause for a day. 
E)  There is a pause for about a month. 
A)  One follows directly after the other. 
B)  There is usually a pause of about 1 hour. 
C)  It varies, but on the order of years. 
D)  There is a pause for a day. 
E)  There is a pause for about a month.

Question 19

The centromere is the structure that holds the chromatids together.

Accepted Answer

A) True 
 B)False

Question 20

When do the centromeres divide in meiosis?

Accepted Answer

A)  prophase I 
B)  prophase II 
C)  anaphase I 
D)  anaphase II 
E)  telophase I 
A)  prophase I 
B)  prophase II 
C)  anaphase I 
D)  anaphase II 
E)  telophase I

Exam 19: Patterns of Chromosome Inheritance

If the secondary oocyte is not fertilized,it does not complete meiosis II.

Which of the following is not a stage of mitosis?

In both spermatogenesis and oogenesis,one sperm/egg forms from one primary spermatocyte/oocyte.

At what stage of mitosis do sister chromatids become full-fledged chromosomes?

How are Jacobs and Klinefelter syndromes alike?

Which phase of meiosis matches those of mitosis in regards to the events occurring in the cell?

Trisomy of which pair of chromosomes has the greatest chance of survival?

What are the two main divisions of the cell cycle?

In meiosis how many divisions occur and how many daughter cells are created?

Which division of meiosis is like mitosis?

Which of the following is associated with mental retardation in Down syndrome?

The products of meiosis I in spermatogenesis are

Suppose that nondisjunction occurs during meiosis II in oogenesis,and each of the resulting four cells is fertilized with a normal sperm (imagine four functional egg cells result from oogenesis).How many cells are normal and how many have a chromosomal trisomy?

Which cells cannot be used to produce a karyotype?

The amount of time the cell takes for interphase is approximately 1 hour,plus or minus about 5 minutes.

At which stage of mitosis do you first see the chromosomes appearing?

If you are looking at a cell in which 2n = 16,and there appear to be 8 structures lined up at the metaphase plate,then you are looking at

How long does it take to proceed from prophase I to metaphase I in oogenesis?

The centromere is the structure that holds the chromatids together.

When do the centromeres divide in meiosis?

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