Question 1

What is the purpose of having cell cycle checkpoints? What are the consequences of not having them?

Accepted Answer

The answer of What is the purpose of having cell...

Question 2

Match the stage of the cell cycle with the appropriate description.
-G₀ phase

Accepted Answer

The G₀ phase is a resting or quiescent stage outside of the cell cycle, where cells do not actively prepare for division. This phase is assumed by cells that have exited the cell cycle, either temporarily or permanently.

Question 3

Explain which of the three cell division processes (mitosis,meiosis,binary fission)is most complex and summarize why it is necessary to promote genetic diversity and maintain a constant chromosome number in organisms.

Accepted Answer

The answer of Explain which of the three cell division...

Question 4

The result of ________ is to increase genetic diversity by creating a new diploid individual from haploid cells.

Accepted Answer

The answer of The result of ________ is to increase...

Question 5

Describe the G₀ phase of the cell cycle.Provide an example of what type of cell would enter the G₀ stage and propose why this cell would enter the G₀ phase.

Accepted Answer

The answer of Describe the G₀ phase of the cell...

Question 6

Describe the two structures seen below.When would they most likely be present in the cell cycle?

Accepted Answer

The answer of Describe the two structures seen below.When would...

Question 7

Compare and contrast the incidence rate per 100,000 individuals versus deaths per 100,000 individuals for breast cancer in females and for prostate cancer in males presented in the infographic below.What does this suggest about the survivability of breast cancer and prostate cancer?

Accepted Answer

The answer of Compare and contrast the incidence rate per...

Question 8

The random distribution of the homologous chromosomes into daughter cells during ________ results in ________ of chromosomes into gametes.

Accepted Answer

The answer of The random distribution of the homologous chromosomes...

Question 9

The number-one cancer responsible for deaths is ________; it is followed by ________ in females and ________ in males.

Accepted Answer

The answer of The number-one cancer responsible for deaths is...

Question 10

Which processes associated with meiosis ensure genetic diversity in offspring? Name two processes that promote variation and explain how they operate.

Accepted Answer

The answer of Which processes associated with meiosis ensure genetic...

Question 11

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 12

Design an experiment testing the hypothesis that increased exposure of a sexually reproducing population to BPA will result in an increase in the number of offspring who have an extra chromosome or who are missing one of their chromosomes.Use the following materials and abilities: BPA,a placebo,1,500 lab mice,and the ability to extract gametes from the mice and examine their chromosome number.Indicate in which phase of meiosis the error is most likely to occur.

Accepted Answer

The answer of Design an experiment testing the hypothesis that...

Question 13

Match the stage of the cell cycle with the appropriate description.
-G₁ phase

Accepted Answer

The G₀ phase is a resting or quiescent stage outside of the cell cycle, where cells do not actively prepare for division. This phase is assumed by cells that have exited the cell cycle, either temporarily or permanently.

Question 14

A cell has completed S phase and is preparing to divide via mitosis.How is the genetic material arranged in G₂ phase?

Accepted Answer

The answer of A cell has completed S phase and...

Question 15

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 16

What would happen to a cell if the cell cycle regulatory proteins overregulated in G₁ even in the absence of any DNA damage and with plenty of nutrients available? Could this phenomenon possibly be used to treat cancer? Explain.

Accepted Answer

The answer of What would happen to a cell if...

Question 17

Consider mitosis,meiosis,and binary fission.Which one of these three processes is the simplest for a cell to complete? Explain.

Accepted Answer

The answer of Consider mitosis,meiosis,and binary fission.Which one of these...

Question 18

Diagram the major events of the cell cycle.Describe the processes that occur during each of these major stages.

Accepted Answer

The answer of Diagram the major events of the cell...

Question 19

Match the stage of the cell cycle with the appropriate description.
-G₂ phase

Accepted Answer

During G₂ phase, cells prepare to divide and check that the proper steps have occurred for division.

Question 20

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...

Quiz 6: Cell Division