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When everything proceeds without error,the process of ________ produces ________ daughter cells that are genetically identical to the mother cell,while the process of ________ produces ________ daughter cells that have half the genetic information present in the mother cell.

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mitosis; t...

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Chromosomes are lined up at the middle of the cell during the ________ portion of cell division.


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

E) A) and B)
F) All of the above

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Which of the following statements is supported by the infographic shown below? Which of the following statements is supported by the infographic shown below?   A)  Though there is more than double the chance of a female getting breast cancer,it is more likely that a female who has lung and bronchus cancer would die from her disease.Males are almost three times more likely to die from having lung and bronchus cancer than from having prostate cancer. B)  A female is twice as likely to die from thyroid cancer than from uterine cancer. C)  A male is three times more likely to die from non-Hodgkin lymphoma than from having esophageal cancer. D)  Both males and females are four times more likely to die of leukemia than from having pancreatic cancer.


A) Though there is more than double the chance of a female getting breast cancer,it is more likely that a female who has lung and bronchus cancer would die from her disease.Males are almost three times more likely to die from having lung and bronchus cancer than from having prostate cancer.
B) A female is twice as likely to die from thyroid cancer than from uterine cancer.
C) A male is three times more likely to die from non-Hodgkin lymphoma than from having esophageal cancer.
D) Both males and females are four times more likely to die of leukemia than from having pancreatic cancer.

E) B) and D)
F) None of the above

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The last stage in the cell cycle is ________; this consists of ________,which separates the replicated DNA,and ________,which divides and portions the contents of the cell into two new daughter cells.

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cell division; mitosis; cytokinesis

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?


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

E) B) and D)
F) B) and C)

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Which of the following is NOT a factor that influences a cell's progression through the cell cycle?


A) gametes
B) cell cycle regulatory molecules
C) hormones
D) growth factors

E) A) and B)
F) None of the above

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Homologous chromosomes


A) are only found in bacterial cells.
B) are only in the cell during S phase.
C) consist of a maternal and paternal copy of each chromosome.
D) consist of six sister chromatids that are held together at the centrosome.

E) A) and B)
F) A) and C)

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C

Cancers are groups of cells that divide rapidly and uncontrollably.Thus,cancer cells


A) are always in the G0 phase.
B) never enter the cell cycle.
C) have a relatively short G1 phase.
D) are stuck at the metaphase plate.

E) None of the above
F) All of the above

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Which term is best associated with a synapsed pair of homologous chromosomes?


A) a pair of sister chromatids attached at the centromere
B) unpackaged DNA
C) a tetrad
D) the mitotic spindle

E) None of the above
F) A) and B)

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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.

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The mice will be divided into three grou...

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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.

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The G0 of the cell cycle is a nondividing ...

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Which of the following foods is MOST likely to contain haploid cells?


A) a sirloin steak
B) an apple
C) a stalk of celery
D) an egg

E) A) and C)
F) A) and D)

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Sister chromatids are held together at a constriction point called a ________.

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centromere

What is the significance of crossing over?


A) Two copies of the same chromosome can become part of the same gamete.
B) The resulting gametes will have novel gene combinations compared to their parent cells' gene combinations.
C) The bivalent chromosomes can exchange genetic material with other pairs of chromosomes.
D) The gametes that are produced will have twice as many chromosomes as the parent cells had.

E) A) and C)
F) A) and D)

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Model organisms (like mice) used in the study of genetic disease


A) are selected strictly for ethical reasons.
B) cannot be trusted since they are very different from human cells.
C) should either be mice or bacteria.
D) may accurately reflect how diseases like cancer occur in humans.

E) A) and B)
F) A) and C)

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Which of the following is a difference between binary fission and mitosis?


A) replication of the genetic material
B) breakdown of the nuclear envelope
C) cell growth and expansion
D) increase in cytoplasmic factors

E) B) and D)
F) A) and C)

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

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The structure on the left is a single un...

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Which two processes work in conjunction to create genetic diversity and maintain chromosome number?


A) mitosis and meiosis
B) meiosis and independent assortment
C) binary fission and mitosis
D) fertilization and meiosis

E) B) and D)
F) A) and D)

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


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

E) A) and D)
F) B) and D)

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The processes of mitosis,meiosis,and binary fission all


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

E) A) and B)
F) A) and C)

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