Question 1

What is a carrier?

Accepted Answer

A) An individual that has a genetic disorder 
B) An individual that is healthy but carries one disease-causing recessive allele 
C) An individual that is healthy but carries one disease-causing dominant allele 
D) An individual that is homozygous at the gene site of interest 
A) An individual that has a genetic disorder 
B) An individual that is healthy but carries one disease-causing recessive allele 
C) An individual that is healthy but carries one disease-causing dominant allele 
D) An individual that is homozygous at the gene site of interest B

Question 2

When I say a flower is "purple," what have I described?

Accepted Answer

A) Its phenotype 
B) Its haplotype 
C) Its karyotype 
D) Its genotype 
A) Its phenotype 
B) Its haplotype 
C) Its karyotype 
D) Its genotype A

Question 3

If a cell had 12 chromosomes at the beginning of meiosis II, how many would each daughter cell have after the completion of meiosis II?

Accepted Answer

A) 6 
B) 12 
C) 18 
D) 24 
A) 6 
B) 12 
C) 18 
D) 24 B

Question 4

Assuming complete dominance, what is the expected ratio of phenotypes of the offspring following the cross of two heterozygotes?

Accepted Answer

A) 4:1 
B) 1:1 
C) 3:1 
D) 1:2:1 
A) 4:1 
B) 1:1 
C) 3:1 
D) 1:2:1

Question 5

What is different between two alleles of the same gene?

Accepted Answer

A) Their location.For example, one allele might be at the end of one chromosome, while the other allele is in the middle of another chromosome. 
B) The chromosome number they are on.For example, one allele might be on chromosome 12, while the other one is on chromosome 3. 
C) The information they carry.For example, one allele might carry the information for blue eye pigment, while the other carries the information for brown eye pigment. 
D) The cell they are in.For example, one might be in a liver cell, while the other is in a blood cell. 
A) Their location.For example, one allele might be at the end of one chromosome, while the other allele is in the middle of another chromosome. 
B) The chromosome number they are on.For example, one allele might be on chromosome 12, while the other one is on chromosome 3. 
C) The information they carry.For example, one allele might carry the information for blue eye pigment, while the other carries the information for brown eye pigment. 
D) The cell they are in.For example, one might be in a liver cell, while the other is in a blood cell.

Question 6

A testcross is performed to determine if a specific individual is a carrier.The results generate a 50/50 ratio of phenotypes.The test subject is therefore ________.

Accepted Answer

A) heterozygous 
B) homozygous dominant 
C) homozygous recessive 
D) heterozygous dominant 
A) heterozygous 
B) homozygous dominant 
C) homozygous recessive 
D) heterozygous dominant

Question 7

Is a clone genetically identical to its parent(s)?

Accepted Answer

A) No, a clone has its own set of genetic differences from its parent. 
B) Yes, a clone is genetically identical to its single parent (the donor of the nucleus). 
C) No, a clone is only genetically identical to the donor of the cell in which it grew. 
D) Yes, a clone is genetically identical to both of its parents (the donor of the nucleus, and the donor of the cell in which it grew). 
A) No, a clone has its own set of genetic differences from its parent. 
B) Yes, a clone is genetically identical to its single parent (the donor of the nucleus). 
C) No, a clone is only genetically identical to the donor of the cell in which it grew. 
D) Yes, a clone is genetically identical to both of its parents (the donor of the nucleus, and the donor of the cell in which it grew).

Question 8

Albinism is a recessive disorder in which the skin and hair fail to produce pigment.The following question(s) ask you to evaluate the pedigree chart shown here in which "N" is the allele for normal pigmentation and "n" is the allele for albinism.The shaded circles for Deirdre and Shannon represent the only individuals expressing the disorder.  
-What is Geoff's genotype?

Accepted Answer

A) NN 
B) Nn 
C) nn 
D) Cannot be determined 
A) NN 
B) Nn 
C) nn 
D) Cannot be determined

Question 9

What process can lead to an individual having too many or two few chromosomes?

Accepted Answer

A) Crossing over 
B) Independent assortment 
C) Homologous recombination 
D) Nondisjunction 
A) Crossing over 
B) Independent assortment 
C) Homologous recombination 
D) Nondisjunction

Question 10

Human white blood cells are often multinucleated (in other words, have more than one nucleus).How many chromosomes would be present in a human white blood cell with two nuclei?

Accepted Answer

A) 46 
B) 92 
C) 184 
D) It varies depending on gender. 
A) 46 
B) 92 
C) 184 
D) It varies depending on gender.

Question 11

What is the name of the syndrome that produces the XXY combination of sex chromosomes?

Accepted Answer

A) Jacob's syndrome 
B) Down syndrome 
C) Klinefelter syndrome 
D) Turner syndrome 
A) Jacob's syndrome 
B) Down syndrome 
C) Klinefelter syndrome 
D) Turner syndrome

Question 12

What specifically separates during meiosis II?

Accepted Answer

A) Homologous chromosomes 
B) Sister chromatids 
C) The cytoplasm 
D) The genome 
A) Homologous chromosomes 
B) Sister chromatids 
C) The cytoplasm 
D) The genome

Question 13

During which phase of the cell cycle are the chromosomes duplicated?

Accepted Answer

A) Interphase 
B) Mitosis 
C) Meiosis 
D) Cytokinesis 
A) Interphase 
B) Mitosis 
C) Meiosis 
D) Cytokinesis

Question 14

An individual can be homozygous for a trait, which means ________.

Accepted Answer

A) both of their alleles carry the same information 
B) their two alleles carry different information 
C) they can only express the dominant trait 
D) they can only express the recessive trait 
A) both of their alleles carry the same information 
B) their two alleles carry different information 
C) they can only express the dominant trait 
D) they can only express the recessive trait

Question 15

What type of cells do not undergo mitosis?

Accepted Answer

A) All cells of the body except gametes (i.e., only somatic cells) 
B) Gametes 
C) Both somatic cells of the body and gametes 
D) Neither somatic cells of the body nor gametes 
A) All cells of the body except gametes (i.e., only somatic cells) 
B) Gametes 
C) Both somatic cells of the body and gametes 
D) Neither somatic cells of the body nor gametes

Question 16

If genes are described as "sex linked," then they are ________.

Accepted Answer

A) typically on the X chromosome 
B) typically on the Y chromosome 
C) located next to one another 
D) expressed only in women or only in men 
A) typically on the X chromosome 
B) typically on the Y chromosome 
C) located next to one another 
D) expressed only in women or only in men

Question 17

In a dihybrid cross involving two autosomal traits on different chromosomes in which the parents are purebred for the opposite forms of both traits, how many of the offspring would be expected to be homozygous recessive for both traits?

Accepted Answer

A) 1 out of 16 
B) 3 out of 16 
C) 6 out of 16 
D) 9 out of 16 
A) 1 out of 16 
B) 3 out of 16 
C) 6 out of 16 
D) 9 out of 16

Question 18

Cells spend most of their lives in ________.

Accepted Answer

A) mitosis 
B) meiosis 
C) interphase 
D) chromosome duplication 
A) mitosis 
B) meiosis 
C) interphase 
D) chromosome duplication

Question 19

The recessive trait is expressed in an individual when ________.

Accepted Answer

A) the individual has one recessive allele and one dominant allele 
B) the individual has two dominant alleles 
C) the individual has two recessive alleles 
D) the individual has one recessive allele only 
A) the individual has one recessive allele and one dominant allele 
B) the individual has two dominant alleles 
C) the individual has two recessive alleles 
D) the individual has one recessive allele only

Question 20

Which of the following is a type of cloning?

Accepted Answer

A) Artificial cloning of plants to generate specific types of fruits or vegetables 
B) Reproductive cloning, where organisms are produced through nuclear transplantation 
C) Therapeutic cloning of stem cells to general specialized cell 
D) All of the above are types of cloning 
A) Artificial cloning of plants to generate specific types of fruits or vegetables 
B) Reproductive cloning, where organisms are produced through nuclear transplantation 
C) Therapeutic cloning of stem cells to general specialized cell 
D) All of the above are types of cloning

What is a carrier?

When I say a flower is "purple," what have I described?

If a cell had 12 chromosomes at the beginning of meiosis II, how many would each daughter cell have after the completion of meiosis II?

Assuming complete dominance, what is the expected ratio of phenotypes of the offspring following the cross of two heterozygotes?

What is different between two alleles of the same gene?

A testcross is performed to determine if a specific individual is a carrier.The results generate a 50/50 ratio of phenotypes.The test subject is therefore ________.

Is a clone genetically identical to its parent(s)?

What process can lead to an individual having too many or two few chromosomes?

Human white blood cells are often multinucleated (in other words, have more than one nucleus).How many chromosomes would be present in a human white blood cell with two nuclei?

What is the name of the syndrome that produces the XXY combination of sex chromosomes?

What specifically separates during meiosis II?

During which phase of the cell cycle are the chromosomes duplicated?

An individual can be homozygous for a trait, which means ________.

What type of cells do not undergo mitosis?

If genes are described as "sex linked," then they are ________.

In a dihybrid cross involving two autosomal traits on different chromosomes in which the parents are purebred for the opposite forms of both traits, how many of the offspring would be expected to be homozygous recessive for both traits?

Cells spend most of their lives in ________.

The recessive trait is expressed in an individual when ________.

Which of the following is a type of cloning?

An Introduction to the Science of Life

The Chemistry of Life

The Cell: The Fundamental Unit of Life

Energy and Life

DNA: The Molecule of Life

Darwinian Evolution

Biodiversity 1: Microscopic Organisms

Biodiversity 2: Fungi and Plants

Biodiversity 3: Animals

Human Body Systems

Ecology

Biology The Core: Appendix

Filters

Exam 5: Chromosomes and Inheritance

What is a carrier?

When I say a flower is "purple," what have I described?

If a cell had 12 chromosomes at the beginning of meiosis II, how many would each daughter cell have after the completion of meiosis II?

Assuming complete dominance, what is the expected ratio of phenotypes of the offspring following the cross of two heterozygotes?

What is different between two alleles of the same gene?

A testcross is performed to determine if a specific individual is a carrier.The results generate a 50/50 ratio of phenotypes.The test subject is therefore ________.

Is a clone genetically identical to its parent(s)?

What process can lead to an individual having too many or two few chromosomes?

Human white blood cells are often multinucleated (in other words, have more than one nucleus).How many chromosomes would be present in a human white blood cell with two nuclei?

What is the name of the syndrome that produces the XXY combination of sex chromosomes?

What specifically separates during meiosis II?

During which phase of the cell cycle are the chromosomes duplicated?

An individual can be homozygous for a trait, which means ________.

What type of cells do not undergo mitosis?

If genes are described as "sex linked," then they are ________.

In a dihybrid cross involving two autosomal traits on different chromosomes in which the parents are purebred for the opposite forms of both traits, how many of the offspring would be expected to be homozygous recessive for both traits?

Cells spend most of their lives in ________.

The recessive trait is expressed in an individual when ________.

Which of the following is a type of cloning?

An Introduction to the Science of Life

The Chemistry of Life

The Cell: The Fundamental Unit of Life

Energy and Life

DNA: The Molecule of Life

Darwinian Evolution

Biodiversity 1: Microscopic Organisms

Biodiversity 2: Fungi and Plants

Biodiversity 3: Animals

Human Body Systems

Ecology

Biology The Core: Appendix

Filters