Question 1

At what 2 checkpoints does the cell check for the integrity of the DNA?

Accepted Answer

A)  G1 and G2 
B)  G1 and mitotic 
C)  G2 and mitotic 
A)  G1 and G2 
B)  G1 and mitotic 
C)  G2 and mitotic

Question 2

When is chorionic villi sampling generally performed?

Accepted Answer

A)  1-2 weeks of pregnancy 
B)  3-4 weeks of pregnancy 
C)  5-8 weeks of pregnancy 
D)  8-12 weeks of pregnancy 
E)  12-16 weeks of pregnancy 
A)  1-2 weeks of pregnancy 
B)  3-4 weeks of pregnancy 
C)  5-8 weeks of pregnancy 
D)  8-12 weeks of pregnancy 
E)  12-16 weeks of pregnancy

Question 3

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 4

How many chromosome pairs does a human have?

Accepted Answer

A)  23 
B)  25 
C)  46 
D)  50 
E)  92 
A)  23 
B)  25 
C)  46 
D)  50 
E)  92

Question 5

In which two phases of mitosis does the nuclear membrane appear/disappear?

Accepted Answer

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

Question 6

Independent alignment creates genetic variation.This is associated with which stage of meiosis?

Accepted Answer

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

Question 7

If there are 4 pairs of chromosomes,how many different combinations of chromosomes are possible?

Accepted Answer

A)  2 
B)  4 
C)  8 
D)  16 
E)  32 
A)  2 
B)  4 
C)  8 
D)  16 
E)  32

Question 8

At which stage of mitosis do the chromsomes look like the letter "V"?

Accepted Answer

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

Question 9

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

Question 10

What are the two parts 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 11

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. 
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.

Question 12

In a karyotype the chromosomes are arranged in order from

Accepted Answer

A)  largest to smallest, with the sex chromosomes at the end. 
B)  smallest to largest, with the sex chromosomes at the end. 
C)  largest to smallest, including the sex chromosomes. 
D)  smallest to largest, including the sex chromosomes. 
A)  largest to smallest, with the sex chromosomes at the end. 
B)  smallest to largest, with the sex chromosomes at the end. 
C)  largest to smallest, including the sex chromosomes. 
D)  smallest to largest, including the sex chromosomes.

Question 13

In what way is spermatogenesis similar to oogenesis?

Accepted Answer

A)  Both occur continuously from puberty on. 
B)  Both result in 4 daughter cells. 
C)  Both result in cells with half the chromosome number. 
D)  Both are arrested in prophase I. 
E)  Both result in 1 or 2 polar bodies. 
A)  Both occur continuously from puberty on. 
B)  Both result in 4 daughter cells. 
C)  Both result in cells with half the chromosome number. 
D)  Both are arrested in prophase I. 
E)  Both result in 1 or 2 polar bodies.

Question 14

How are mitosis and cytokinesis alike?

Accepted Answer

A)  Both involve the nucleus. 
B)  Both involve mitochondria. 
C)  Both involve division. 
D)  Both involve apoptosis. 
E)  Both involve DNA synthesis. 
A)  Both involve the nucleus. 
B)  Both involve mitochondria. 
C)  Both involve division. 
D)  Both involve apoptosis. 
E)  Both involve DNA synthesis.

Question 15

If an organism has 4 pairs of chromosomes,after meiosis it will contain how many chromosomes?

Accepted Answer

A)  2 
B)  4 
C)  8 
D)  16 
E)  32 
A)  2 
B)  4 
C)  8 
D)  16 
E)  32

Question 16

External signals such as hormones and growth factors can stimulate a cell to go through the cell cycle.

Accepted Answer

A) True 
 B)False

Question 17

From a karyotype you could tell all of the following about the cell except whether

Accepted Answer

A)  a fusion of two chromosomes had occurred. 
B)  a translocation had occurred between two chromosomes. 
C)  one chromosome was missing. 
D)  there were three copies of a chromosome present. 
E)  a particular gene contained a mutation. 
A)  a fusion of two chromosomes had occurred. 
B)  a translocation had occurred between two chromosomes. 
C)  one chromosome was missing. 
D)  there were three copies of a chromosome present. 
E)  a particular gene contained a mutation.

Question 18

Jessica and Nathan just found out they are pregnant.The doctor estimates it has been 6 weeks since her last menstruation.Can they have an amniocentesis done now?

Accepted Answer

NO
Explanation: No.

Question 19

How do proto-oncogenes affect the cell cycle?

Accepted Answer

A)  stimulate it 
B)  inhibit it 
A)  stimulate it 
B)  inhibit it

Question 20

In which stage of meiosis do homologous chromosomes separate from each other?

Accepted Answer

A)  metaphase I 
B)  metaphase II 
C)  anaphase I 
D)  anaphase II 
E)  interkinesis 
A)  metaphase I 
B)  metaphase II 
C)  anaphase I 
D)  anaphase II 
E)  interkinesis

Exam 18: Patterns of Chromosome Inheritance

At what 2 checkpoints does the cell check for the integrity of the DNA?

When is chorionic villi sampling generally performed?

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

How many chromosome pairs does a human have?

In which two phases of mitosis does the nuclear membrane appear/disappear?

Independent alignment creates genetic variation.This is associated with which stage of meiosis?

If there are 4 pairs of chromosomes,how many different combinations of chromosomes are possible?

At which stage of mitosis do the chromsomes look like the letter "V"?

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

What are the two parts of the cell cycle?

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

In a karyotype the chromosomes are arranged in order from

In what way is spermatogenesis similar to oogenesis?

How are mitosis and cytokinesis alike?

If an organism has 4 pairs of chromosomes,after meiosis it will contain how many chromosomes?

External signals such as hormones and growth factors can stimulate a cell to go through the cell cycle.

From a karyotype you could tell all of the following about the cell except whether

Jessica and Nathan just found out they are pregnant.The doctor estimates it has been 6 weeks since her last menstruation.Can they have an amniocentesis done now?

How do proto-oncogenes affect the cell cycle?

In which stage of meiosis do homologous chromosomes separate from each other?

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