Question 1

If crossing over occurred in mitosis, would it have an impact on the resulting cells?

Accepted Answer

Theoretically no.All the same genes woul

Question 2

Sexual reproduction has many benefits from a genetic standpoint.Can you think of any downside to sexual reproduction?

Accepted Answer

The most obvious downside of sexual repr

Question 3

Paired homologous chromosomes are found at the spindle equator during

Accepted Answer

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

Question 4

All of the following are TRUE of adaptive traits EXCEPT

Accepted Answer

A)  they allow individuals to adjust to the environment. 
B)  they spread faster through populations of asexually reproducing organisms. 
C)  they spread faster through populations of sexually reproducing organisms. 
D)  variety results from mixing of the genetic traits. 
E)  all of these are true. 
A)  they allow individuals to adjust to the environment. 
B)  they spread faster through populations of asexually reproducing organisms. 
C)  they spread faster through populations of sexually reproducing organisms. 
D)  variety results from mixing of the genetic traits. 
E)  all of these are true.

Question 5

With sexual reproduction, two genes for the same trait that are slightly different are called __________.

Accepted Answer

The answer of With sexual reproduction, two genes for the...

Question 6

Which of the following is NOT true of human chromosomes?

Accepted Answer

A)  The haploid number is 23. 
B)  The diploid number is 46. 
C)  There are 23 pairs of chromosomes. 
D)  Human gametes end up with two of each type of 23 chromosomes. 
E)  Human gametes end up with one of each type of 23 chromosomes. 
A)  The haploid number is 23. 
B)  The diploid number is 46. 
C)  There are 23 pairs of chromosomes. 
D)  Human gametes end up with two of each type of 23 chromosomes. 
E)  Human gametes end up with one of each type of 23 chromosomes.

Question 7

-The illustration shows one possible outcome of the random alignment of homologous chromosomes at metaphase I.How many other possible arrangements exist?

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3 
E)  4 
A)  0 
B)  1 
C)  2 
D)  3 
E)  4

Question 8

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
-During this phase homologues separate.

Accepted Answer

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

Question 9

During meiosis II,

Accepted Answer

A)  cytokinesis results in the formation of a total of two cells. 
B)  sister chromatids of each chromosome are separated from each other. 
C)  homologous chromosomes pair. 
D)  homologous chromosomes separate. 
E)  sister chromatids exchange parts. 
A)  cytokinesis results in the formation of a total of two cells. 
B)  sister chromatids of each chromosome are separated from each other. 
C)  homologous chromosomes pair. 
D)  homologous chromosomes separate. 
E)  sister chromatids exchange parts.

Question 10

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
-Recombination via crossing over occurs during this stage.

Accepted Answer

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

Question 11

The following questions refer to the figures above.
-Which of the letters in the above figure represents male structures?

Accepted Answer

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

Question 12

Which of the following does NOT produce variation?

Accepted Answer

A)  crossing over 
B)  random alignment of chromosomes during meiosis 
C)  asexual reproduction 
D)  genetic recombination of alleles 
E)  sexual reproduction 
A)  crossing over 
B)  random alignment of chromosomes during meiosis 
C)  asexual reproduction 
D)  genetic recombination of alleles 
E)  sexual reproduction

Question 13

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
-By the end of this phase the number of homologous chromosomes is reduced in half.

Accepted Answer

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

Question 14

Crossing over

Accepted Answer

A)  generally results in binary fission. 
B)  involves centrioles. 
C)  involves breakages and exchanges between sister chromatids. 
D)  results in new combinations of alleles being channeled into the daughter cells. 
E)  does all of these. 
A)  generally results in binary fission. 
B)  involves centrioles. 
C)  involves breakages and exchanges between sister chromatids. 
D)  results in new combinations of alleles being channeled into the daughter cells. 
E)  does all of these.

Question 15

Why does meiosis in females produce only one viable gamete while meiosis in males produces four?

Accepted Answer

After fertilization, the female is oblig

Question 16

-In plants, which of the following cells is(are) diploid?

Accepted Answer

A)  egg 
B)  sperm 
C)  spore 
D)  leaf cell 
E)  spore and leaf cell 
A)  egg 
B)  sperm 
C)  spore 
D)  leaf cell 
E)  spore and leaf cell

Question 17

Which of the following is TRUE at the end of telophase I in corn (20 chromosomes)?

Accepted Answer

A)  Each cell has 10 chromosomes. 
B)  Each chromosome is double-stranded. 
C)  Centromeres connect sister chromatids. 
D)  Each cell has 10 chromosomes, and each chromosome is double-stranded. 
E)  Each cell has 10 chromosomes, each chromosome is double-stranded, and centromeres connect sister chromatids. 
A)  Each cell has 10 chromosomes. 
B)  Each chromosome is double-stranded. 
C)  Centromeres connect sister chromatids. 
D)  Each cell has 10 chromosomes, and each chromosome is double-stranded. 
E)  Each cell has 10 chromosomes, each chromosome is double-stranded, and centromeres connect sister chromatids.

Question 18

Crossing over occurs during

Accepted Answer

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

Exam 12: Meiosis and Sexual Reproduction

If crossing over occurred in mitosis, would it have an impact on the resulting cells?

Sexual reproduction has many benefits from a genetic standpoint.Can you think of any downside to sexual reproduction?

Paired homologous chromosomes are found at the spindle equator during

All of the following are TRUE of adaptive traits EXCEPT

With sexual reproduction, two genes for the same trait that are slightly different are called __________.

Which of the following is NOT true of human chromosomes?

-The illustration shows one possible outcome of the random alignment of homologous chromosomes at metaphase I.How many other possible arrangements exist?

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 -During this phase homologues separate.

During meiosis II,

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 -Recombination via crossing over occurs during this stage.

The following questions refer to the figures above. -Which of the letters in the above figure represents male structures?

Which of the following does NOT produce variation?

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 -By the end of this phase the number of homologous chromosomes is reduced in half.

Crossing over

Why does meiosis in females produce only one viable gamete while meiosis in males produces four?

-In plants, which of the following cells is(are) diploid?

Which of the following is TRUE at the end of telophase I in corn (20 chromosomes)?

Crossing over occurs during

Invitation to Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure and Function

Ground Rules of Metabolism

Where It Startsphotosynthesis

How Cells Release Chemical Energy

Dna Structure and Function

From Dna to Protein

Gene Control

How Cells Reproduce

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Studying and Manipulating Genomes

Evidence of Evolution

Processes of Evolution

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Lifes Origin and Early Evolution

Viruses and Prokaryotes

Protiststhe Simplest Eukaryotes

The Land Plants

Fungi

Animal Evolutionthe Invertebrates

Animal Evolutionthe Chordates

Animal Evolutionhuman Evolution

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Plant Nutrition and Transport

Life Cycles of Flowering Plants

Communication Strategies in Plants

Animal Tissues and Organ Systems

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