Question 1

The random orientation of different pairs of homologous chromosomes on the metaphase plate is responsible for __________.

Accepted Answer

A) Random fertilization 
B) Independent assortment 
C) Crossing over 
D) Asexual reproduction 
A) Random fertilization 
B) Independent assortment 
C) Crossing over 
D) Asexual reproduction B

Question 2

In most respects,the second meiotic division is identical to a normal _________ division.

Accepted Answer

mitotic

Question 3

The process of independent assortment refers to:

Accepted Answer

A) the random meeting of an egg and sperm 
B) the orientation of homologous chromosomes at metaphase I 
C) the orientation of chromosomes at metaphase II 
D) the random choice of which cell in germ-line tissue will begin meiosis 
E) whether sexual or asexual reproduction will occur 
A) the random meeting of an egg and sperm 
B) the orientation of homologous chromosomes at metaphase I 
C) the orientation of chromosomes at metaphase II 
D) the random choice of which cell in germ-line tissue will begin meiosis 
E) whether sexual or asexual reproduction will occur B

Question 4

The main difference between prophase I and II is that in prophase I:

Accepted Answer

A) synapsis and crossing over occurs 
B) the nucleolus disappears 
C) the nuclear membrane disappears 
D) chromosomes coil 
E) the spindle forms 
A) synapsis and crossing over occurs 
B) the nucleolus disappears 
C) the nuclear membrane disappears 
D) chromosomes coil 
E) the spindle forms

Question 5

What are the three events that occur in sexual reproduction that increase genetic variability?

Accepted Answer

Sexual reproduction increases

Question 6

During which stage of meiosis does crossing over occur?

Accepted Answer

A) Prophase I 
B) Anaphase I 
C) Prophase II 
D) Telophase II 
A) Prophase I 
B) Anaphase I 
C) Prophase II 
D) Telophase II

Question 7

Reproduction by mitosis only is asexual.

Accepted Answer

A) True 
 B)False

Question 8

Which of these is not a unique feature of meiosis?

Accepted Answer

A) Synapsis 
B) Reduction division 
C) Diploid daughter cells 
D) Haploid daughter cells 
A) Synapsis 
B) Reduction division 
C) Diploid daughter cells 
D) Haploid daughter cells

Question 9

In humans,_____________ divide by meiosis to produce eggs and sperm.

Accepted Answer

A) somatic cells 
B) gametes 
C) zygotes 
D) germ-line cells 
E) triploid 
A) somatic cells 
B) gametes 
C) zygotes 
D) germ-line cells 
E) triploid

Question 10

An organism's diploid number is 64.Its haploid number would be:

Accepted Answer

A) 128 
B) 64 
C) 16 
D) 32 
E) It is impossible to determinE. 
A) 128 
B) 64 
C) 16 
D) 32 
E) It is impossible to determinE.

Question 11

The pairing of homologous chromosomes:

Accepted Answer

A) occurs during anaphase II 
B) occurs during telophase I 
C) is called crossing over 
D) is called synapsis 
E) only occurs in mitosis 
A) occurs during anaphase II 
B) occurs during telophase I 
C) is called crossing over 
D) is called synapsis 
E) only occurs in mitosis

Question 12

After meiosis,the gamete joins with another gamete in all eukaryotic organisms.

Accepted Answer

A) True 
 B)False

Question 13

During which stage do chromosomes line up in single file on the equatorial plane?

Accepted Answer

A) Metaphase I 
B) Anaphase II 
C) Metaphase II 
D) Telophase I 
E) Telophase II 
A) Metaphase I 
B) Anaphase II 
C) Metaphase II 
D) Telophase I 
E) Telophase II

Question 14

The arrangement of the chromosomes in metaphase I of meiosis is not important as long as homologues pair.

Accepted Answer

A) True 
 B)False

Question 15

What is the evolutionary significance of crossing over?

Accepted Answer

New genetic combinations can o

Question 16

In anaphase I,________ separate and in anaphase II,____________ separate.

Accepted Answer

A) homologous chromosomes,chromatids 
B) chromatids,homologous chromosomes 
C) haploid cells,diploid cells 
D) homologous chromosomes,diploid cells 
E) chromatids,haploid cells 
A) homologous chromosomes,chromatids 
B) chromatids,homologous chromosomes 
C) haploid cells,diploid cells 
D) homologous chromosomes,diploid cells 
E) chromatids,haploid cells

Question 17

Meiosis involves four nuclear divisions.

Accepted Answer

A) True 
 B)False

Question 18

The development of an adult from an unfertilized egg is called ___________.

Accepted Answer

The answer of The development of an adult from an...

Question 19

All of the following are sources of genetic variety except:

Accepted Answer

A) random fertilization 
B) independent assortment 
C) crossing over 
D) synapsis 
A) random fertilization 
B) independent assortment 
C) crossing over 
D) synapsis

Question 20

What is Muller's Ratchet theory?

Accepted Answer

The geneticist Herman Muller pointed out

Exam 9: Meiosis

The random orientation of different pairs of homologous chromosomes on the metaphase plate is responsible for __________.

In most respects,the second meiotic division is identical to a normal _________ division.

The process of independent assortment refers to:

The main difference between prophase I and II is that in prophase I:

What are the three events that occur in sexual reproduction that increase genetic variability?

During which stage of meiosis does crossing over occur?

Reproduction by mitosis only is asexual.

Which of these is not a unique feature of meiosis?

In humans,_____________ divide by meiosis to produce eggs and sperm.

An organism's diploid number is 64.Its haploid number would be:

The pairing of homologous chromosomes:

After meiosis,the gamete joins with another gamete in all eukaryotic organisms.

During which stage do chromosomes line up in single file on the equatorial plane?

The arrangement of the chromosomes in metaphase I of meiosis is not important as long as homologues pair.

What is the evolutionary significance of crossing over?

In anaphase I,________ separate and in anaphase II,____________ separate.

Meiosis involves four nuclear divisions.

The development of an adult from an unfertilized egg is called ___________.

All of the following are sources of genetic variety except:

What is Muller's Ratchet theory?

The Science of Biology

The Chemistry of Life

Molecules of Life

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Energy and Life

Photosynthesis: Acquiring Energy From the Sun

How Cells Harvest Energy From Food

Mitosis

Foundations of Genetics

DNA: the Genetic Material

How Genes Work

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Evolution and Natural Selection

How We Name Living Things

Prokaryotes: the First Single-Celled Creatures

Protists: Advent of the Eukaryotes

Fungi Invade the Land

Evolution of the Animal Phyla

History of the Vertebrates

How Humans Evolved

The Animal Body and How It Moves

Circulation

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How the Animal Body Defends Itself

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Chemical Signaling Within the Animal Body

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Evolution of Plants

Plant Form and Function

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In anaphase I, separate and in anaphase II,____ separate.