Question 1

Homologous chromosomes ________.

Accepted Answer

A)  carry genes controlling the same inherited characteristics 
B)  include only the autosomes 
C)  are a set of chromosomes that the cell received from one parent 
D)  carry the same versions of all genes 
A)  carry genes controlling the same inherited characteristics 
B)  include only the autosomes 
C)  are a set of chromosomes that the cell received from one parent 
D)  carry the same versions of all genes A

Question 2

The mitotic cell cycle results in the production of ________.

Accepted Answer

A)  four cells, each with the same amount of genetic material and the same genetic information 
B)  two cells, each with the same amount of genetic material but with different genetic information 
C)  two cells, each with the same amount of genetic material and the same genetic information 
D)  four cells, each with the same amount of genetic material but with different genetic information 
A)  four cells, each with the same amount of genetic material and the same genetic information 
B)  two cells, each with the same amount of genetic material but with different genetic information 
C)  two cells, each with the same amount of genetic material and the same genetic information 
D)  four cells, each with the same amount of genetic material but with different genetic information C

Question 3

Ordinary cell division produces two daughter cells that are genetically identical.This type of cell division is important for all of the following functions EXCEPT ________.

Accepted Answer

A)  growth of a multicellular organism 
B)  cell replacement 
C)  production of sperm and eggs 
D)  asexual reproduction 
A)  growth of a multicellular organism 
B)  cell replacement 
C)  production of sperm and eggs 
D)  asexual reproduction C

Question 4

Sexual reproduction in humans ________.

Accepted Answer

A)  allows a haploid sperm cell to fertilize a haploid egg cell 
B)  produces a haploid individual 
C)  produces an individual with 23 chromosomes 
D)  combines two diploid gametes, producing a zygote 
A)  allows a haploid sperm cell to fertilize a haploid egg cell 
B)  produces a haploid individual 
C)  produces an individual with 23 chromosomes 
D)  combines two diploid gametes, producing a zygote

Question 5

Which of these describes the type of reproduction that is most adaptive in a rapidly changing environment with many different parasitic diseases present?

Accepted Answer

A)  asexual reproduction because the currently successful genotypes can reproduce quickly 
B)  asexual reproduction, because asexual reproduction uses less energy, which leaves more for each individual to adapt to the changing environment 
C)  sexual reproduction because the diversity of genotypes increases the likelihood that there is one which can survive in a new environment 
D)  sexual reproduction because this type of reproduction allows the production of a greater number of offspring thus providing more individuals to take advantage of any environmental challenges presented 
A)  asexual reproduction because the currently successful genotypes can reproduce quickly 
B)  asexual reproduction, because asexual reproduction uses less energy, which leaves more for each individual to adapt to the changing environment 
C)  sexual reproduction because the diversity of genotypes increases the likelihood that there is one which can survive in a new environment 
D)  sexual reproduction because this type of reproduction allows the production of a greater number of offspring thus providing more individuals to take advantage of any environmental challenges presented

Question 6

-The above figure shows that ________.

Accepted Answer

A)  meiosis results in the formation of four haploid daughter cells 
B)  fertilization results in four haploid daughter cells 
C)  the human 2n number is 4 
D)  meiosis forms diploid gametes 
A)  meiosis results in the formation of four haploid daughter cells 
B)  fertilization results in four haploid daughter cells 
C)  the human 2n number is 4 
D)  meiosis forms diploid gametes

Question 7

What chromosomes belong to a normal human female?

Accepted Answer

A)  22 autosomes and 2 X chromosomes 
B)  44 autosomes and 2 X chromosomes 
C)  44 autosomes, one X chromosome, and one Y chromosome 
D)  46 autosomes and two X chromosomes 
A)  22 autosomes and 2 X chromosomes 
B)  44 autosomes and 2 X chromosomes 
C)  44 autosomes, one X chromosome, and one Y chromosome 
D)  46 autosomes and two X chromosomes

Question 8

Which of the following is the best description of the events of anaphase I?

Accepted Answer

A)  Half of the chromosomes inherited from the mother go to one pole along with half of the chromosomes inherited from the father. 
B)  Sister chromatids separate and the daughter chromosomes migrate to opposite poles. 
C)  Homologous chromosomes randomly separate and migrate to opposite poles. 
D)  All of the chromosomes inherited from the mother go to one pole of the cell, and all of the chromosomes inherited from the father go to the other pole. 
A)  Half of the chromosomes inherited from the mother go to one pole along with half of the chromosomes inherited from the father. 
B)  Sister chromatids separate and the daughter chromosomes migrate to opposite poles. 
C)  Homologous chromosomes randomly separate and migrate to opposite poles. 
D)  All of the chromosomes inherited from the mother go to one pole of the cell, and all of the chromosomes inherited from the father go to the other pole.

Question 9

Which of these events occurs during anaphase?

Accepted Answer

A)  Sister chromatids become separate chromosomes. 
B)  Chromosomes line up in the middle of the cell. 
C)  The nuclear envelope reappears. 
D)  The nuclear envelope breaks up. 
A)  Sister chromatids become separate chromosomes. 
B)  Chromosomes line up in the middle of the cell. 
C)  The nuclear envelope reappears. 
D)  The nuclear envelope breaks up.

Question 10

Sister chromatids are joined at the ________.

Accepted Answer

A)  centromere 
B)  spindle 
C)  centrosome 
D)  centriole 
A)  centromere 
B)  spindle 
C)  centrosome 
D)  centriole

Question 11

What is the chromosome number found in humans cells after meiosis I is completed?

Accepted Answer

A)  46 autosomes 
B)  43 autosomes and 2 sex chromosomes 
C)  22 autosomes and a sex chromosome 
D)  44 autosomes and 2 sex chromosomes 
A)  46 autosomes 
B)  43 autosomes and 2 sex chromosomes 
C)  22 autosomes and a sex chromosome 
D)  44 autosomes and 2 sex chromosomes

Question 12

A duplicated chromosome consists of two ________.

Accepted Answer

A)  centromeres 
B)  centrosomes 
C)  genomes 
D)  sister chromatids 
A)  centromeres 
B)  centrosomes 
C)  genomes 
D)  sister chromatids

Question 13

A(n)________ is an example of an organism that can sometimes reproduce asexually by parthenogenesis.

Accepted Answer

A)  cat 
B)  human 
C)  Komodo dragon 
D)  mouse 
A)  cat 
B)  human 
C)  Komodo dragon 
D)  mouse

Question 14

How many chromosomes does an individual with Turner syndrome have?

Accepted Answer

A)  2n + 1 
B)  n + 1 
C)  2n − 1 
D)  n − 1 
A)  2n + 1 
B)  n + 1 
C)  2n − 1 
D)  n − 1

Question 15

Sexual reproduction appears to be absent in bdelloid rotifers.Which of these,if found in this group,would bring into question the idea that they reproduce ONLY asexually?

Accepted Answer

A)  female rotifers with eggs 
B)  significant differences of two different alleles among different populations (one population having mostly allele A and one having mostly a). 
C)  cells in which meiosis occurs 
D)  related groups (not bdelloid rotifers) which reproduce both sexually and asexually. 
A)  female rotifers with eggs 
B)  significant differences of two different alleles among different populations (one population having mostly allele A and one having mostly a). 
C)  cells in which meiosis occurs 
D)  related groups (not bdelloid rotifers) which reproduce both sexually and asexually.

Question 16

Scenario Questions
Please read the following paragraph and answer the following questions.
Amanda's parents realized that her body was not developing properly about the time she was 12 years old. She was shorter than most of her friends and was not going through changes normally associated with female puberty. They took her to a doctor who initially diagnosed Amanda with Turner Syndrome because of her physical features. He ordered a karyotype that confirmed his diagnosis. Amanda was born with only one X chromosome. Although there is no specific cure, the doctor was able to treat her and correct some of the problems associated with the condition. For example, she received growth hormone to improve her growth and estrogen to help her develop the physical changes of puberty.
-What percentage of Amanda's gametes would likely have the normal number of chromosomes?

Accepted Answer

A)  zero 
B)  100 percent 
C)  50 percent 
D)  25 percent 
A)  zero 
B)  100 percent 
C)  50 percent 
D)  25 percent

Question 17

Anaphase II is essentially the same as mitotic anaphase except that in anaphase II ________ and in mitotic anaphase ________.

Accepted Answer

A)  the cells are diploid... the cells are haploid 
B)  chromosomes line up double file in the middle of the cell... chromosomes line up single file in the middle of the cell 
C)  crossing over occurs... crossing over does not occur 
D)  the cells are haploid and sister chromatids separate... the cells have the same number of chromosomes as the original cell and sister chromatids separate 
A)  the cells are diploid... the cells are haploid 
B)  chromosomes line up double file in the middle of the cell... chromosomes line up single file in the middle of the cell 
C)  crossing over occurs... crossing over does not occur 
D)  the cells are haploid and sister chromatids separate... the cells have the same number of chromosomes as the original cell and sister chromatids separate

Question 18

Upon completion of telophase I and cytokinesis,there is(are)________ cell(s).

Accepted Answer

A)  four haploid 
B)  two diploid 
C)  two haploid 
D)  one diploid 
A)  four haploid 
B)  two diploid 
C)  two haploid 
D)  one diploid

Question 19

Which of the following is a characteristic seen in prophase I that does NOT occur in prophase II?

Accepted Answer

A)  Chromosomes move to the middle of the cell. 
B)  Spindle formation occurs. 
C)  The number of chromosomes doubles. 
D)  Crossing over occurs. 
A)  Chromosomes move to the middle of the cell. 
B)  Spindle formation occurs. 
C)  The number of chromosomes doubles. 
D)  Crossing over occurs.

Question 20

Cytokinesis typically begins during the ________ stage of mitosis.

Accepted Answer

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

Exam 8: Cellular Reproduction: Cells from Cells

Homologous chromosomes ________.

The mitotic cell cycle results in the production of ________.

Ordinary cell division produces two daughter cells that are genetically identical.This type of cell division is important for all of the following functions EXCEPT ________.

Sexual reproduction in humans ________.

Which of these describes the type of reproduction that is most adaptive in a rapidly changing environment with many different parasitic diseases present?

-The above figure shows that ________.

What chromosomes belong to a normal human female?

Which of the following is the best description of the events of anaphase I?

Which of these events occurs during anaphase?

Sister chromatids are joined at the ________.

What is the chromosome number found in humans cells after meiosis I is completed?

A duplicated chromosome consists of two ________.

A(n)________ is an example of an organism that can sometimes reproduce asexually by parthenogenesis.

How many chromosomes does an individual with Turner syndrome have?

Sexual reproduction appears to be absent in bdelloid rotifers.Which of these,if found in this group,would bring into question the idea that they reproduce ONLY asexually?

Anaphase II is essentially the same as mitotic anaphase except that in anaphase II ________ and in mitotic anaphase ________.

Upon completion of telophase I and cytokinesis,there is(are)________ cell(s).

Which of the following is a characteristic seen in prophase I that does NOT occur in prophase II?

Cytokinesis typically begins during the ________ stage of mitosis.

Introduction: Biology Today

Essential Chemistry for Biology

The Molecules of Life

A Tour of the Cell

The Working Cell

Cellular Respiration: Obtaining Energy from Food

Photosynthesis: Using Light to Make Food

Patterns of Inheritance

The Structure and Function of DNA

How Genes Are Controlled

DNA Technology

How Populations Evolve

How Biological Diversity Evolves

The Evolution of Microbial Life

The Evolution of Plants and Fungi

The Evolution of Animals

An Introduction to Ecology and the Biosphere

Population Ecology

Communities and Ecosystems

Unifying Concepts of Animal Structure and Function

Nutrition and Digestion

Circulation and Respiration

The Body's Defenses

Hormones

Reproduction and Development

Nervous, Sensory, and Locomotor Systems

The Life of a Flowering Plant

The Working Plant

Filters

Anaphase II is essentially the same as mitotic anaphase except that in anaphase II and in mitotic anaphase .