Question 1

MATCHING
Classification.Answer the following questions by using the five numbers below.
a.10
b.20
c.40
d.60
e.80
-How many ova (eggs) would eventually result from 20 primary oocytes?

Accepted Answer

The answer of MATCHING
Classification.Answer the following questions by using the...

Question 2

During prophase II,

Accepted Answer

A)   a new bipolar spindle forms.
B)   crossing over occurs.
C)   chromosomes are single-stranded.
D)   the cell is diploid.
E)   the nuclear envelope re-forms.

Question 3

Classification.Some of the stages of meiosis are listed below.For the following statements, select the best choice of these stages.
a.prophase I
b.metaphase II
c.anaphase I
d.anaphase II
e.telophase I
-Following this phase each individual cell is haploid.

Accepted Answer

The answer of Classification.Some of the stages of meiosis are...

Question 4

Which of the following is NOT an advantage of sexual reproduction?

Accepted Answer

A)   It offers an alternative adaptation in a changing environment.
B)   It is adaptive in coevolution situations.
C)   Half of a parent's genome is passed on.
D)   The genetic variation it provides may be useful in the future.
E)   It yields offspring with novel combinations of traits.

Question 5

Sperm are formed from the direct maturation of

Accepted Answer

A)   sperm mother cells.
B)   spermatids.
C)   spermatogonial cells.
D)   primary spermatocytes.
E)   secondary spermatocytes.

Question 6

The essence of meiosis is that

Accepted Answer

A)   gametes receive one copy of each member of each pair of homologous chromosomes.
B)   diploid gametes are formed.
C)   each gamete receives one member of each pair of homologous chromosomes.
D)   haploid gametes are formed.
E)   each gamete receives one member of each pair of homologous chromosomes, and haploid gametes are formed.

Question 7

Gamete formation is

Accepted Answer

A)   the result of the process of mitosis.
B)   the pairing of homologous chromosomes.
C)   the formation of sex cells.
D)   the fusion of gametes.
E)   a process that occurs only in asexually reproducing forms. C

Question 8

-In this generalized illustration of gametogenesis, the four cells in the right column should be labeled

Accepted Answer

A)   sperm.
B)   eggs.
C)   ovum and three polar bodies.
D)   secondary spermatocytes.
E)   diploid.

Question 9

If a child more strongly resembles one parent's physical traits than the other parent's, the explanation could be due to chromosome movements during

Accepted Answer

A)   anaphase II.
B)   metaphase II.
C)   prophase II.
D)   anaphase I.
E)   telophase I.

Question 10

There are ____ molecules of DNA in a developing human sperm cell at the beginning of prophase I.

Accepted Answer

A)   92
B)   23
C)   46
D)   half as many (as compared to somatic cells) 
E)   twice as many (as compared to mature sperm)

Question 11

If a diploid organism has a genome consisting of 4 pairs of chromosomes, it can produce ____ different combinations of maternal and paternal chromosomes (disregarding crossing over) .

Accepted Answer

A)   4
B)   8
C)   12
D)   16
E)   32

Question 12

The following questions refer to the figures above.
-Which of the letters in the above figure represents the ovaries where eggs are produced?

Accepted Answer

A)   A
B)   B
C)   C
D)   D
E)   more than one of these

Question 13

Polar bodies

Accepted Answer

A)   are dumping places for excess genetic material.
B)   have no known biological function.
C)   are produced by meiosis.
D)   will serve as the gametes if something happens to the egg.
E)   all of these are true EXCEPT "will serve as the gametes if something happens to the egg."

Question 14

MATCHING
Classification.Answer the following questions by using the five numbers below.
a.10
b.20
c.40
d.60
e.80
-How many sperm would eventually be produced from 20 primary spermatocytes?

Accepted Answer

The answer of MATCHING
Classification.Answer the following questions by using the...

Question 15

A diploid organism has a chromosome with 10 genes.It has a different allele for each gene on its two chromosomes.How many possible outcomes for chromosome destined for a gamete after meiosis exist?

Accepted Answer

Each gene has 2 poss...

Question 16

At __________, the fusion of two gametes produces a __________.

Accepted Answer

fertilization; zygote

Question 17

Sexual reproduction

Accepted Answer

A)   leads to uniform characteristics within a population.
B)   results in new combinations of genetic traits.
C)   creates genetic clones.
D)   requires less tissue differentiation than asexual reproduction.
E)   produces genetic clones and requires less tissue differentiation than asexual reproduction.

Question 18

Crossing over is one of the most important events in meiosis because

Accepted Answer

A)   it produces new combinations of alleles on chromosomes.
B)   homologous chromosomes must be separated into different daughter cells.
C)   the number of chromosomes allotted to each daughter cell must be halved.
D)   homologous chromatids must be separated into different daughter cells.
E)   all of these reasons are true.

Question 19

Anaphase

Accepted Answer

A)   involves the lining up of the chromosomes across the equatorial plate.
B)   is the same in mitosis and meiosis I and II.
C)   is initiated when the chromosomes begin to move apart.
D)   results in an unequal distribution of chromosomes to the resulting cells.
E)   does all of these. C

Question 20

In comparing mitosis and meiosis, which of the following statements is true?

Accepted Answer

A)   Meiosis I is more like mitosis than is meiosis II.
B)   Both processes result in four cells.
C)   Pairing of homologues occurs in both.
D)   Chromatids are present only in mitosis.
E)   Meiosis II resembles mitosis.

Exam 12: Meiosis and Sexual Reproduction

MATCHING Classification.Answer the following questions by using the five numbers below. a.10 b.20 c.40 d.60 e.80 -How many ova (eggs) would eventually result from 20 primary oocytes?

Correct AnswerverifiedShow Answer

During prophase II,

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Classification.Some of the stages of meiosis are listed below.For the following statements, select the best choice of these stages. a.prophase I b.metaphase II c.anaphase I d.anaphase II e.telophase I -Following this phase each individual cell is haploid.

Correct AnswerverifiedShow Answer

Which of the following is NOT an advantage of sexual reproduction?

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Sperm are formed from the direct maturation of

Correct AnswerverifiedShow Answer

The essence of meiosis is that

Correct AnswerverifiedShow Answer

Gamete formation is

Correct AnswerverifiedC

-In this generalized illustration of gametogenesis, the four cells in the right column should be labeled

Correct AnswerverifiedShow Answer

If a child more strongly resembles one parent's physical traits than the other parent's, the explanation could be due to chromosome movements during

Correct AnswerverifiedShow Answer

There are ____ molecules of DNA in a developing human sperm cell at the beginning of prophase I.

Correct AnswerverifiedShow Answer

If a diploid organism has a genome consisting of 4 pairs of chromosomes, it can produce ____ different combinations of maternal and paternal chromosomes (disregarding crossing over) .

Correct AnswerverifiedShow Answer

The following questions refer to the figures above. -Which of the letters in the above figure represents the ovaries where eggs are produced?

Correct AnswerverifiedShow Answer

Polar bodies

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MATCHING Classification.Answer the following questions by using the five numbers below. a.10 b.20 c.40 d.60 e.80 -How many sperm would eventually be produced from 20 primary spermatocytes?

Correct AnswerverifiedShow Answer

A diploid organism has a chromosome with 10 genes.It has a different allele for each gene on its two chromosomes.How many possible outcomes for chromosome destined for a gamete after meiosis exist?

Correct AnswerverifiedEach gene has 2 poss...View AnswerShow Answer

At __________, the fusion of two gametes produces a __________.

Correct Answerverifiedfertilization; zygote

Sexual reproduction

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Crossing over is one of the most important events in meiosis because

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Anaphase

Correct AnswerverifiedC

In comparing mitosis and meiosis, which of the following statements is true?

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C

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Each gene has 2 poss...
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At , the fusion of two gametes produces a .

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fertilization; zygote

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C

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