Question 1

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.F) A) and B)
G) B) and D)

Question 2

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 cellsF) A) and C)
G) B) and E)

Question 3

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 divisionF) B) and D)
G) B) and C)

Question 4

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, twoF) A) and B)
G) A) and C)

Question 5

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 6

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, eightF) None of the above
G) B) and D)

Question 7

Which of the following is not a stage of mitosis?

Accepted Answer

A)   interphase
B)   prophase
C)   metaphase
D)   anaphase
E)   telophaseF) A) and B)
G) A) and C) A

Question 8

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

Accepted Answer

A) True 
 B)False  True

Question 9

The centromere is the structure that holds the chromatids together.

Accepted Answer

A) True 
 B)False

Question 10

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 15F) A) and B)
G) D) and E)

Question 11

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

Accepted Answer

A)   prophase
B)   metaphase
C)   anaphase
D)   telophase
E)   cytokinesisF) B) and D)
G) A) and B)

Question 12

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

Accepted Answer

A)   prophase
B)   metaphase
C)   anaphase
D)   telophase
E)   cytokinesisF) A) and C)
G) B) and D)

Question 13

When do the centromeres divide in meiosis?

Accepted Answer

A)   prophase I
B)   prophase II
C)   anaphase I
D)   anaphase II
E)   telophase IF) A) and E)
G) None of the above

Question 14

Which division of meiosis is like mitosis?

Accepted Answer

A)   meiosis I
B)   meiosis II
C)   G1
D)   S
E)   G2F) A) and B)
G) A) and C)

Question 15

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.F) C) and D)
G) B) and E)

Question 16

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.F) A) and B)
G) B) and C)

Question 17

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.F) A) and D)
G) A) and C)

Question 18

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 tongueF) A) and B)
G) None of the above

Question 19

The products of meiosis I in spermatogenesis are

Accepted Answer

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

Question 20

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

Accepted Answer

A) True 
 B)False  False

Exam 19: Patterns of Chromosome Inheritance

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

Correct AnswerverifiedShow Answer

Which cells cannot be used to produce a karyotype?

Correct AnswerverifiedShow Answer

What are the two main divisions of the cell cycle?

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following is not a stage of mitosis?

Correct AnswerverifiedA

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

Correct AnswerverifiedTrue

The centromere is the structure that holds the chromatids together.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

When do the centromeres divide in meiosis?

Correct AnswerverifiedShow Answer

Which division of meiosis is like mitosis?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

How are Jacobs and Klinefelter syndromes alike?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The products of meiosis I in spermatogenesis are

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedFalse

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