Question 1

A replicated chromosome consists of ________ sister chromatid(s).

Accepted Answer

A)  1 
B)  2 
C)  4 
D)  6

Question 2

A cell containing 56 chromosomes is undergoing meiosis.Explain how chromosome number changes as the cells proceed through meiosis.

Accepted Answer

The answer of A cell containing 56 chromosomes is undergoing...

Question 3

Crossing-over produces chromosomes with new combinations of DNA; this is followed by independent assortment of ________ chromosomes to generate even more genetic diversity among gametes.

Accepted Answer

The answer of Crossing-over produces chromosomes with new combinations of...

Question 4

The process shown in the figure below could produce two ________ cells.

Accepted Answer

A)  identical skin 
B)  genetically unique sperm 
C)  cloned red blood 
D)  identical prokaryotic

Question 5

The circle near the center of the replicated chromosome below represents a

Accepted Answer

A)  chromatid. 
B)  centromere. 
C)  centriole. 
D)  homologous chromosome.

Question 6

Match the event or stage of mitosis with the appropriate description.
-Replicated chromosomes condense and attach to the mitotic spindle.

Accepted Answer

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

Question 7

Match the stage of the cell cycle with the appropriate description.
-M phase

Accepted Answer

A) Duplicated chromosomes are separated during this phase. 
B) Cells prepare to divide and check that the proper steps have occurred for division. 
C) phase in which cells duplicate the genetic material 
D) resting stage assumed by cells that exit the cell cycle 
E) Two new daughter cells grow in preparation for division.

Question 8

The processes of mitosis,meiosis,and binary fission all

Accepted Answer

A)  generate haploid gametes. 
B)  occur in eukaryotic and prokaryotic cells. 
C)  are used to produce daughter cells. 
D)  generate clones.

Question 9

In genetic engineering,molecular biologists often combine segments of DNA from two separate organisms.This is an example of genetic recombination that occurs in a laboratory setting.Which of the following is a form of genetic recombination that occurs naturally within cells?

Accepted Answer

A)  mitosis 
B)  independent assortment 
C)  crossing over 
D)  asexual reproduction

Question 10

Which of the following is associated with mitosis?

Accepted Answer

A)  independent assortment 
B)  maintenance of chromosome number 
C)  crossing over 
D)  reductional division

Question 11

The G₀ phase of the cell cycle is distinguished by

Accepted Answer

A)  the failure of cells to divide following telophase. 
B)  a doubling of chromosomes. 
C)  an absence of preparation for DNA synthesis. 
D)  the appearance of a metaphase plate.

Question 12

Match the event or stage of mitosis with the appropriate description.
-The entire cell physically divides into two daughter cells.

Accepted Answer

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

Question 13

Match the event or stage of meiosis with the appropriate drawing.
-

Accepted Answer

A) prophase I 
B) metaphase I 
C) anaphase I 
D) telophase I and cytokinesis I 
E) prophase II
F)metaphase II
G)anaphase II
H)telophase II and cytokinesis II

Question 14

If cells with two pairs of homologous chromosomes can generally produce four kinds of gametes,what happens to the genetic variety of the gametes if an unspecified number of crossing-over events between homologous chromosomes occur during meiosis I?

Accepted Answer

The answer of If cells with two pairs of homologous...

Question 15

Which of the following is known to result from the disruption of mitosis and meiosis?

Accepted Answer

A)  Alzheimer's disease 
B)  prostate cancer 
C)  autism 
D)  heart disease

Exam 6: Cell Division

A replicated chromosome consists of ________ sister chromatid(s) .