Question 1

The possible combinations of alleles in gametes ________ due to independent assortment and crossing over.

Accepted Answer

A)  increases 
B)  decreases 
C)  stays the same 
D)  increases or decreases depending on the cell type 
A)  increases 
B)  decreases 
C)  stays the same 
D)  increases or decreases depending on the cell type

Question 2

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

Accepted Answer

lung and bronchus ca

Question 3

Which of the following examples accurately describes crossing over?

Accepted Answer

A)  Sister chromatids of maternal chromosome 1 exchange segments of genetic information with one another. 
B)  Maternal chromosome 3 exchanges segments of DNA with paternal chromosome 21. 
C)  Sister chromatids of paternal chromosome 1 exchange segments of genetic information with one another. 
D)  Paternal chromosome 7 exchanges segments of DNA with maternal chromosome 7. 
A)  Sister chromatids of maternal chromosome 1 exchange segments of genetic information with one another. 
B)  Maternal chromosome 3 exchanges segments of DNA with paternal chromosome 21. 
C)  Sister chromatids of paternal chromosome 1 exchange segments of genetic information with one another. 
D)  Paternal chromosome 7 exchanges segments of DNA with maternal chromosome 7.

Question 4

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. 
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 5

Which of the following differentiates meiosis from mitosis?

Accepted Answer

A)  Mitosis is used for the repair of cells,whereas meiosis creates cells for sexual reproduction. 
B)  In mitosis four identical daughter cells are produced,whereas two genetically different cells are produced in meiosis. 
C)  Meiosis is a form of asexual division,whereas mitosis is a form of sexual division. 
D)  Mitosis occurs in prokaryotic cells,whereas meiosis occurs in eukaryotic cells. 
A)  Mitosis is used for the repair of cells,whereas meiosis creates cells for sexual reproduction. 
B)  In mitosis four identical daughter cells are produced,whereas two genetically different cells are produced in meiosis. 
C)  Meiosis is a form of asexual division,whereas mitosis is a form of sexual division. 
D)  Mitosis occurs in prokaryotic cells,whereas meiosis occurs in eukaryotic cells.

Question 6

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

Accepted Answer

Binary fission is the most efficient pro

Question 7

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

Accepted Answer

Cell cycle checkpoints ensure that cells

Question 8

According to the image below,during which phase of the cell cycle does the cell increase in size in preparation for division?

Accepted Answer

A)  Region 1 
B)  Region 2 
C)  Region 3 
D)  Region 4 
A)  Region 1 
B)  Region 2 
C)  Region 3 
D)  Region 4

Question 9

The process of mitosis is thought to have evolved from binary fission.What similarities exist between these processes?

Accepted Answer

A)  The DNA being separated is attached to a membrane during both processes. 
B)  Both processes involve the separation of more than one piece of DNA. 
C)  Both processes include DNA segregation. 
D)  Both processes occur in bacterial cells. 
A)  The DNA being separated is attached to a membrane during both processes. 
B)  Both processes involve the separation of more than one piece of DNA. 
C)  Both processes include DNA segregation. 
D)  Both processes occur in bacterial cells.

Question 10

If crossing-over does not occur and homologous chromosome pairs are not independently assorted during meiosis I,resulting in all maternal chromosomes sorted to one cell while all paternal chromosomes are sorted to another cell,what would be the genetic results in the gametes produced at the end of meiosis II?

Accepted Answer

A)  Twenty-five percent of the gametes would contain only maternal DNA and 75% of the gametes would contain only paternal DNA. 
B)  Seventy-five percent of the gametes would contain only maternal DNA and 25% of the gametes would contain only paternal DNA. 
C)  Fifty percent of the gametes would contain only maternal DNA and 50% of the gametes would contain only paternal DNA. 
D)  All gametes would contain equal amounts of maternal and paternal DNA. 
A)  Twenty-five percent of the gametes would contain only maternal DNA and 75% of the gametes would contain only paternal DNA. 
B)  Seventy-five percent of the gametes would contain only maternal DNA and 25% of the gametes would contain only paternal DNA. 
C)  Fifty percent of the gametes would contain only maternal DNA and 50% of the gametes would contain only paternal DNA. 
D)  All gametes would contain equal amounts of maternal and paternal DNA.

Question 11

Patricia Hunt determined that bisphenol A (BPA)was hindering the process of meiosis in the ovaries of the mice in her experiment.BPA disrupted the ability of the chromosomes to separate into four haploid cells.Which of the following statements describes possible outcome(s)of this disruption?

Accepted Answer

A)  All four resulting cells will have exactly half the number of chromosomes found in the mother cell. 
B)  Three of the resulting cells will have exactly half the number of chromosomes found in the mother cell.The fourth cell will have double the chromosome number found in the mother cell. 
C)  Two of the resulting cells will have exactly half the number of chromosomes found in the mother cell.The other two cells will have exactly triple the chromosome number found in the mother cell. 
D)  Two of the resulting cells may have exactly half the chromosome number of the mother cell.One cell may have half the chromosome number of the mother cell plus one or more extra chromosomes,while the remaining cell would have less than half the number of chromosomes found in the mother cell. 
A)  All four resulting cells will have exactly half the number of chromosomes found in the mother cell. 
B)  Three of the resulting cells will have exactly half the number of chromosomes found in the mother cell.The fourth cell will have double the chromosome number found in the mother cell. 
C)  Two of the resulting cells will have exactly half the number of chromosomes found in the mother cell.The other two cells will have exactly triple the chromosome number found in the mother cell. 
D)  Two of the resulting cells may have exactly half the chromosome number of the mother cell.One cell may have half the chromosome number of the mother cell plus one or more extra chromosomes,while the remaining cell would have less than half the number of chromosomes found in the mother cell.

Question 12

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 cell would be unable to begin S (syn

Question 13

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 14

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

Question 15

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

Accepted Answer

Students should draw a circular picture

Question 16

The successful union of one male and one female gamete forms a new single cell known as a

Accepted Answer

A)  chromatid. 
B)  spindle. 
C)  zygote. 
D)  gametocyte. 
A)  chromatid. 
B)  spindle. 
C)  zygote. 
D)  gametocyte.

Question 17

Anna Soto and Carlos Sonnenschein found evidence that nonylphenol interferes with the G0 and G1 checkpoints in the cell cycle of human breast cells.A possible unfortunate consequence of bypassing checkpoint G0 or G1 is that the cell

Accepted Answer

A)  may begin to replicate DNA before it is ready or allow damaged DNA to be replicated and then continue dividing inappropriately.If unchecked,this cell division could continue to form a potentially cancerous tumor. 
B)  will immediately enter into mitosis without replicating its DNA during S phase.The cell will not be able to survive because it will have too few chromosomes. 
C)  will complete mitotic separation of its replicated DNA but will not complete cytokinesis. 
D)  life cycle will stop before DNA replication and separation can occur.This dead cell will become a potentially cancerous tumor. 
A)  may begin to replicate DNA before it is ready or allow damaged DNA to be replicated and then continue dividing inappropriately.If unchecked,this cell division could continue to form a potentially cancerous tumor. 
B)  will immediately enter into mitosis without replicating its DNA during S phase.The cell will not be able to survive because it will have too few chromosomes. 
C)  will complete mitotic separation of its replicated DNA but will not complete cytokinesis. 
D)  life cycle will stop before DNA replication and separation can occur.This dead cell will become a potentially cancerous tumor.

Question 18

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

Accepted Answer

During S phase the uncondensed chromosom

Question 19

During meiosis I,the chromosome number is reduced to haploid by separating

Accepted Answer

A)  each sister chromatid into two different daughter cells. 
B)  one of each homologous chromosome pair into two different daughter cells. 
C)  each sister chromatid into four different daughter cells. 
D)  one of each homologous chromosome pair into four different daughter cells. 
A)  each sister chromatid into two different daughter cells. 
B)  one of each homologous chromosome pair into two different daughter cells. 
C)  each sister chromatid into four different daughter cells. 
D)  one of each homologous chromosome pair into four different daughter cells.

Question 20

If a plant has a total of 18 chromosomes,how many chromosomes would be present in each of its gametes?

Accepted Answer

A)  36 
B)  18 
C)  9 
D)  6 
A)  36 
B)  18 
C)  9 
D)  6

The possible combinations of alleles in gametes ________ due to independent assortment and crossing over.

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

Which of the following examples accurately describes crossing over?

The G₀ phase of the cell cycle is distinguished by

Which of the following differentiates meiosis from mitosis?

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

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

According to the image below,during which phase of the cell cycle does the cell increase in size in preparation for division?

The process of mitosis is thought to have evolved from binary fission.What similarities exist between these processes?

Patricia Hunt determined that bisphenol A (BPA)was hindering the process of meiosis in the ovaries of the mice in her experiment.BPA disrupted the ability of the chromosomes to separate into four haploid cells.Which of the following statements describes possible outcome(s)of this disruption?

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.

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.

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

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

The successful union of one male and one female gamete forms a new single cell known as a

Anna Soto and Carlos Sonnenschein found evidence that nonylphenol interferes with the G₀ and G₁ checkpoints in the cell cycle of human breast cells.A possible unfortunate consequence of bypassing checkpoint G₀ or G₁ is that the cell

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

During meiosis I,the chromosome number is reduced to haploid by separating

If a plant has a total of 18 chromosomes,how many chromosomes would be present in each of its gametes?

The Nature of Science

Evaluating Scientific Claims

Chemistry of Life

Life Is Cellular

How Cells Work

Patterns of Inheritance

Chromosomes and Human Genetics

What Genes Are

How Genes Work

Evidence for Evolution

Mechanisms of Evolution

Adaptation and Species

The History of Life

Bacteria and Archaea

Plants,fungi,and Protists

Animals and Human Evolution

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Exam 6: Cell Division

The possible combinations of alleles in gametes ________ due to independent assortment and crossing over.

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

Which of the following examples accurately describes crossing over?

The G0 phase of the cell cycle is distinguished by

Which of the following differentiates meiosis from mitosis?

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

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

According to the image below,during which phase of the cell cycle does the cell increase in size in preparation for division?

The process of mitosis is thought to have evolved from binary fission.What similarities exist between these processes?

Patricia Hunt determined that bisphenol A (BPA)was hindering the process of meiosis in the ovaries of the mice in her experiment.BPA disrupted the ability of the chromosomes to separate into four haploid cells.Which of the following statements describes possible outcome(s)of this disruption?

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.

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.

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

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

The successful union of one male and one female gamete forms a new single cell known as a

Anna Soto and Carlos Sonnenschein found evidence that nonylphenol interferes with the G0 and G1 checkpoints in the cell cycle of human breast cells.A possible unfortunate consequence of bypassing checkpoint G0 or G1 is that the cell

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

During meiosis I,the chromosome number is reduced to haploid by separating

If a plant has a total of 18 chromosomes,how many chromosomes would be present in each of its gametes?

The Nature of Science

Evaluating Scientific Claims

Chemistry of Life

Life Is Cellular

How Cells Work

Patterns of Inheritance

Chromosomes and Human Genetics

What Genes Are

How Genes Work

Evidence for Evolution

Mechanisms of Evolution

Adaptation and Species

The History of Life

Bacteria and Archaea

Plants,fungi,and Protists

Animals and Human Evolution

Filters

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

The G₀ phase of the cell cycle is distinguished by

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.

Anna Soto and Carlos Sonnenschein found evidence that nonylphenol interferes with the G₀ and G₁ checkpoints in the cell cycle of human breast cells.A possible unfortunate consequence of bypassing checkpoint G₀ or G₁ is that the cell

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