Question 1

What immediately follows meiosis I?

Accepted Answer

A)  DNA replication
B)  prophase II
C)  metaphase II
D)  synapsis of homologues
E)  crossing over of homologuesF) B) and C)
G) All of the above

Question 2

One of a pair of chromosomes with similar genetic information and from different sources like the sperm and egg.

Accepted Answer

A)  chiasma
B)  homologue
C)  kinetochore
D)  synapsis
E)  synaptonemalF) C) and E)
G) A) and C)

Question 3

Which of the following statements about crossing over is false?

Accepted Answer

A)  Crossing over takes place between nonsister chromatids.
B)  Crossing over takes place between sister chromatids.
C)  Crossing over occurs during prophase I.
D)  Sites of crossing over are called chiasmata.
E)  Crossing over is also called genetic recombination.F) C) and D)
G) A) and B)

Question 4

Which cells never divide by meiosis? (Check all that apply.)

Accepted Answer

A)  haploid cells
B)  diploid cells
C)  somatic cells
D)  germ-line cells
E)  zygotesF) A) and B)
G) A) and C)

Question 5

Diploid organisms use meiosis to produce haploid cells.Meiosis consists of how many rounds of nuclear division?

Accepted Answer

A)  one
B)  two
C)  three
D)  four
E)  none of theseF) B) and E)
G) D) and E)

Question 6

Edouard van Beneden proposed that an egg and a sperm,each containing half the complement of chromosomes found in somatic cells,fuse to produce a single cell called a(n) ________.

Accepted Answer

A)  zygote
B)  karyotype
C)  embryo
D)  oocyteE) C) and D)
F) B) and D)

Question 7

You are studying meiosis in an organism where 2n = 24.How many chromosomes will each nucleus have after meiosis II is complete?

Accepted Answer

A)  24
B)  12
C)  6
D)  48E) A) and D)
F) All of the above

Question 8

Non-disjunction is the failure of homologous chromosomes to separate during meiosis I,or the failure of sister chromatids to separate during meiosis II or mitosis.As a result,both homologous chromosomes or both sister chromatids migrate to the same pole of the cell.This produces daughter cells with an imbalance of chromosomes.A cell biologist examines the final products of meiosis in an earthworm (2n=36) and finds 2 cells with 20 chromosomes,and 2 cells with 16 chromosomes.Most likely this was because

Accepted Answer

A)  2 pairs of sister chromatids failed to separate during meiosis II.
B)  1 pair of sister chromatids failed to separate during meiosis II.
C)  2 pairs of homologous chromosomes failed to separate during meiosis I.
D)  1 pair of homologous chromosomes failed to separate during meiosis I.E) A) and B)
F) A) and C)

Question 9

In meiosis,sister kinetochores are attached to the same pole of the cell during meiosis I,and sister chromatid cohesion is released during anaphase II.What would be the likely result if sister kinetochores were attached to different poles of the cell during meiosis I and sister chromatid cohesion was released during anaphase I?

Accepted Answer

A)  Sister chromatids would migrate to opposite poles during anaphase I.
B)  Sister chromatids would migrate to opposite poles during anaphase II.
C)  Sister chromatids would migrate to the same pole during anaphase I.
D)  Sister chromatids would migrate to the same pole during anaphase II.E) A) and B)
F) A) and C)

Question 10

The point of connection between two sister chromatids,before anaphase II of meiosis separates them,is called the

Accepted Answer

A)  centriole
B)  kinetochore.
C)  centromere.
D)  spindle apparatus.
E)  centrosome.F) C) and D)
G) A) and E)

Question 11

In life cycles that alternate between haploid and diploid stages,fertilization doubles the number of chromosomes per cell while ________ reduces it in half.

Accepted Answer

A)  mitosis
B)  meiosis
C)  binary fission
D)  syngamyE) B) and C)
F) A) and D)

Question 12

The synaptonemal complex is

Accepted Answer

A)  a cluster of microtubules at each pole of the cell.
B)  a network of microtubules that forms the spindle apparatus.
C)  a network of proteins that holds homologues together.
D)  the area where microtubules attach to the centromere of each chromosome.
E)  a region of highly coiled DNA.F) B) and E)
G) B) and C)

Question 13

If there were no suppression of DNA replication between meiotic divisions but cytokinesis proceeded normally,what is the most likely outcome of meiosis?

Accepted Answer

A)  4 diploid cells
B)  2 diploid cells
C)  4 haploid cells
D)  2 haploid cells
E)  2 diploid cells and 2 haploid cellsF) C) and D)
G) A) and B)

Exam 11: Sexual Reproduction and Meiosis

One of a pair of chromosomes with similar genetic information and from different sources like the sperm and egg.

Correct Answer
verified

Which of the following statements about crossing over is false?

Correct Answer
verified

The point of connection between two sister chromatids,before anaphase II of meiosis separates them,is called the

Correct Answer
verified

Correct Answer
verified

What immediately follows meiosis I?

Correct Answer
verified

In life cycles that alternate between haploid and diploid stages,fertilization doubles the number of chromosomes per cell while ________ reduces it in half.

Correct Answer
verified

Correct Answer
verified

The synaptonemal complex is

Correct Answer
verified

If there were no suppression of DNA replication between meiotic divisions but cytokinesis proceeded normally,what is the most likely outcome of meiosis?

Correct Answer
verified

Which cells never divide by meiosis? (Check all that apply.)

Correct Answer
verified

Edouard van Beneden proposed that an egg and a sperm,each containing half the complement of chromosomes found in somatic cells,fuse to produce a single cell called a(n) ________.

Correct Answer
verified

Diploid organisms use meiosis to produce haploid cells.Meiosis consists of how many rounds of nuclear division?

Correct Answer
verified

You are studying meiosis in an organism where 2n = 24.How many chromosomes will each nucleus have after meiosis II is complete?

Correct Answer
verified

Exam 11: Sexual Reproduction and Meiosis

One of a pair of chromosomes with similar genetic information and from different sources like the sperm and egg.

Correct AnswerverifiedShow Answer

Which of the following statements about crossing over is false?

Correct AnswerverifiedShow Answer

The point of connection between two sister chromatids,before anaphase II of meiosis separates them,is called the

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

What immediately follows meiosis I?

Correct AnswerverifiedShow Answer

In life cycles that alternate between haploid and diploid stages,fertilization doubles the number of chromosomes per cell while ________ reduces it in half.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The synaptonemal complex is

Correct AnswerverifiedShow Answer

If there were no suppression of DNA replication between meiotic divisions but cytokinesis proceeded normally,what is the most likely outcome of meiosis?

Correct AnswerverifiedShow Answer

Which cells never divide by meiosis? (Check all that apply.)

Correct AnswerverifiedShow Answer

Edouard van Beneden proposed that an egg and a sperm,each containing half the complement of chromosomes found in somatic cells,fuse to produce a single cell called a(n) ________.

Correct AnswerverifiedShow Answer

Diploid organisms use meiosis to produce haploid cells.Meiosis consists of how many rounds of nuclear division?

Correct AnswerverifiedShow Answer

You are studying meiosis in an organism where 2n = 24.How many chromosomes will each nucleus have after meiosis II is complete?

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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