Question 1

Define polygenic and pleiotropic traits and explain their significance for researchers' efforts to link human genotypes to phenotypes.

Accepted Answer

The relationship between most genes and

Question 2

Human ABO blood types are:

Accepted Answer

A)  determined by regulatory genes. 
B)  determined by multiple alleles. 
C)  determined by multiple genes. 
D)  determined by homeotic genes. 
A)  determined by regulatory genes. 
B)  determined by multiple alleles. 
C)  determined by multiple genes. 
D)  determined by homeotic genes.

Question 3

In mammals, the male parent's gametes determine the sex of his offspring because:

Accepted Answer

A)  the X chromosome originates only from females. 
B)  sperm are more powerful than eggs. 
C)  the Y chromosome is present in males only. 
D)  the X chromosome determines sex. 
A)  the X chromosome originates only from females. 
B)  sperm are more powerful than eggs. 
C)  the Y chromosome is present in males only. 
D)  the X chromosome determines sex.

Question 4

Homeotic (Hox) genes are:

Accepted Answer

A)  structural genes. 
B)  responsible for the development and location of key body parts. 
C)  responsible for determining the sex of offspring. 
D)  not used during embryonic development. 
A)  structural genes. 
B)  responsible for the development and location of key body parts. 
C)  responsible for determining the sex of offspring. 
D)  not used during embryonic development.

Question 5

Hox genes:

Accepted Answer

A)  appear to function in similar ways across diverse groups of organisms. 
B)  function only in fruit flies. 
C)  control which amino acids get plugged into polypeptide chains. 
D)  control the development of language in humans. 
A)  appear to function in similar ways across diverse groups of organisms. 
B)  function only in fruit flies. 
C)  control which amino acids get plugged into polypeptide chains. 
D)  control the development of language in humans.

Question 6

DNA:

Accepted Answer

A)  is single stranded. 
B)  contains six different nucleotide bases. 
C)  directs cellular function. 
D)  contains the base uracil. 
A)  is single stranded. 
B)  contains six different nucleotide bases. 
C)  directs cellular function. 
D)  contains the base uracil.

Question 7

In his experiments with garden peas, Mendel found that one physical unit is inherited from the father and one from the mother. This provided evidence for:

Accepted Answer

A)  Mendel's law of independent assortment. 
B)  Thomas Hunt Morgan's ideas of mutation. 
C)  Mendel's law of segregation. 
D)  Mendel's concept of nondisjunction. 
A)  Mendel's law of independent assortment. 
B)  Thomas Hunt Morgan's ideas of mutation. 
C)  Mendel's law of segregation. 
D)  Mendel's concept of nondisjunction.

Question 8

Meiosis results in the production of:

Accepted Answer

A)  two gametes. 
B)  four gametes. 
C)  a single gamete. 
D)  none of the above 
A)  two gametes. 
B)  four gametes. 
C)  a single gamete. 
D)  none of the above

Question 9

Deoxyribonucleic acid (DNA) differs from ribonucleic acid (RNA) in that:

Accepted Answer

A)  it was studied during Darwin's lifetime. 
B)  it is the "recipe" for all biological characteristics and functions. 
C)  it was discovered by Mendel. 
D)  it is stored in ribosomes. 
A)  it was studied during Darwin's lifetime. 
B)  it is the "recipe" for all biological characteristics and functions. 
C)  it was discovered by Mendel. 
D)  it is stored in ribosomes.

Question 10

Individuals whose blood type is A and who carry both dominant and recessive genes at this locus have a genotype of:

Accepted Answer

A)  AA. 
B)  AO. 
C)  AB. 
D)  none of the above 
A)  AA. 
B)  AO. 
C)  AB. 
D)  none of the above

Question 11

Proteins consist of:

Accepted Answer

A)  genes. 
B)  RNA plus mRNA. 
C)  chains of DNA nucleotides. 
D)  chains of amino acids. 
A)  genes. 
B)  RNA plus mRNA. 
C)  chains of DNA nucleotides. 
D)  chains of amino acids.

Question 12

The gene responsible for lactose persistence among adults in Europe is a:

Accepted Answer

A)  structural gene. 
B)  dominant gene. 
C)  regulatory gene. 
D)  Hox gene. 
A)  structural gene. 
B)  dominant gene. 
C)  regulatory gene. 
D)  Hox gene.

Question 13

In 2004, the Human Genome Project published a human genome map that indicated that:

Accepted Answer

A)  100,000 genes are responsible for the human body's proteins. 
B)  50,000 genes are responsible for the human body's proteins. 
C)  20,000-25,000 genes are responsible for the human body's proteins. 
D)  200,000-250,000 genes are responsible for the human body's proteins. 
A)  100,000 genes are responsible for the human body's proteins. 
B)  50,000 genes are responsible for the human body's proteins. 
C)  20,000-25,000 genes are responsible for the human body's proteins. 
D)  200,000-250,000 genes are responsible for the human body's proteins.

Question 14

Somatic cells are characterized by all of the following EXCEPT:

Accepted Answer

A)  each includes a nucleus. 
B)  they are used in multiple tissues throughout the body. 
C)  each contains half a copy of an organism's DNA. 
D)  each contains a complete copy of all of an organism's DNA. 
A)  each includes a nucleus. 
B)  they are used in multiple tissues throughout the body. 
C)  each contains half a copy of an organism's DNA. 
D)  each contains a complete copy of all of an organism's DNA.

Question 15

A doctor finds that the mammary glands of a woman are not functioning due to a genetic abnormality that influences the structural design of the thoracic cavity. This is likely:

Accepted Answer

A)  the result of a mutation on the sex chromosomes. 
B)  the result of a mutation in a Hox gene. 
C)  the result of a mutation in HSV-1. 
D)  none of the above 
A)  the result of a mutation on the sex chromosomes. 
B)  the result of a mutation in a Hox gene. 
C)  the result of a mutation in HSV-1. 
D)  none of the above

Question 16

Baboons are commonly used in biomedical research. Which of the following is a major contribution to the Human Genome Project that has resulted from baboon research?

Accepted Answer

A)  Baboons provide a model for HIV. 
B)  Baboons provide a model for osteoarthritis. 
C)  Baboons provide a model for understanding human obesity. 
D)  Baboons provide a model for osteoporosis. 
A)  Baboons provide a model for HIV. 
B)  Baboons provide a model for osteoarthritis. 
C)  Baboons provide a model for understanding human obesity. 
D)  Baboons provide a model for osteoporosis.

Question 17

The expression of polygenic traits:

Accepted Answer

A)  is never determined by the influence of environmental factors. 
B)  is determined by genes at several loci in conjunction with environmental factors. 
C)  is determined solely by genes at two or more loci. 
D)  is determined solely by the influence of environmental factors. 
A)  is never determined by the influence of environmental factors. 
B)  is determined by genes at several loci in conjunction with environmental factors. 
C)  is determined solely by genes at two or more loci. 
D)  is determined solely by the influence of environmental factors.

Question 18

Somatic cells include all of the following EXCEPT:

Accepted Answer

A)  lung cells. 
B)  gametes. 
C)  skin cells. 
D)  neurons. 
A)  lung cells. 
B)  gametes. 
C)  skin cells. 
D)  neurons.

Question 19

An individual that is homozygous at the locus that determines ABO blood type may have any of the following EXCEPT:

Accepted Answer

A)  type AB blood. 
B)  type O blood. 
C)  type A blood. 
D)  type B blood. 
A)  type AB blood. 
B)  type O blood. 
C)  type A blood. 
D)  type B blood.

Question 20

The presence of a recessive allele:

Accepted Answer

A)  can always be determined from the phenotype. 
B)  is usually masked in the phenotype. 
C)  is expressed in the phenotype alongside a dominant allele. 
D)  can never be expressed in the phenotype. 
A)  can always be determined from the phenotype. 
B)  is usually masked in the phenotype. 
C)  is expressed in the phenotype alongside a dominant allele. 
D)  can never be expressed in the phenotype.

Define polygenic and pleiotropic traits and explain their significance for researchers' efforts to link human genotypes to phenotypes.

Human ABO blood types are:

In mammals, the male parent's gametes determine the sex of his offspring because:

Homeotic (Hox) genes are:

Hox genes:

DNA:

In his experiments with garden peas, Mendel found that one physical unit is inherited from the father and one from the mother. This provided evidence for:

Meiosis results in the production of:

Deoxyribonucleic acid (DNA) differs from ribonucleic acid (RNA) in that:

Individuals whose blood type is A and who carry both dominant and recessive genes at this locus have a genotype of:

Proteins consist of:

The gene responsible for lactose persistence among adults in Europe is a:

In 2004, the Human Genome Project published a human genome map that indicated that:

Somatic cells are characterized by all of the following EXCEPT:

A doctor finds that the mammary glands of a woman are not functioning due to a genetic abnormality that influences the structural design of the thoracic cavity. This is likely:

Baboons are commonly used in biomedical research. Which of the following is a major contribution to the Human Genome Project that has resulted from baboon research?

The expression of polygenic traits:

Somatic cells include all of the following EXCEPT:

An individual that is homozygous at the locus that determines ABO blood type may have any of the following EXCEPT:

The presence of a recessive allele:

What Is Physical Anthropology

Evolution: Constructing a Fundamental Scientific Theory

Genes and Their Evolution: Population Genetics

Biology in the Present: Living People

Biology in the Present: the Other Living Primates

Primate Sociality, Social Behavior, and Culture

Fossils and Their Place in Time and Nature

Primate Origins and Evolution: the First 50 Million Years

Early Hominin Origins and Evolution: the Roots of Humanity

The Origins and Evolution of Early Homo

The Origins, Evolution, and Dispersal of Modern People

Our Last 10,000 Years: Agriculture, Population, and the Bioarchaeology of a Fundamental Transition

Evolution: Today and Tomorrow

Filters

Exam 3: Genetics: Reproducing Life and Producing Variation

Define polygenic and pleiotropic traits and explain their significance for researchers' efforts to link human genotypes to phenotypes.

Human ABO blood types are:

In mammals, the male parent's gametes determine the sex of his offspring because:

Homeotic (Hox) genes are:

Hox genes:

DNA:

In his experiments with garden peas, Mendel found that one physical unit is inherited from the father and one from the mother. This provided evidence for:

Meiosis results in the production of:

Deoxyribonucleic acid (DNA) differs from ribonucleic acid (RNA) in that:

Individuals whose blood type is A and who carry both dominant and recessive genes at this locus have a genotype of:

Proteins consist of:

The gene responsible for lactose persistence among adults in Europe is a:

In 2004, the Human Genome Project published a human genome map that indicated that:

Somatic cells are characterized by all of the following EXCEPT:

A doctor finds that the mammary glands of a woman are not functioning due to a genetic abnormality that influences the structural design of the thoracic cavity. This is likely:

Baboons are commonly used in biomedical research. Which of the following is a major contribution to the Human Genome Project that has resulted from baboon research?

The expression of polygenic traits:

Somatic cells include all of the following EXCEPT:

An individual that is homozygous at the locus that determines ABO blood type may have any of the following EXCEPT:

The presence of a recessive allele:

What Is Physical Anthropology

Evolution: Constructing a Fundamental Scientific Theory

Genes and Their Evolution: Population Genetics

Biology in the Present: Living People

Biology in the Present: the Other Living Primates

Primate Sociality, Social Behavior, and Culture

Fossils and Their Place in Time and Nature

Primate Origins and Evolution: the First 50 Million Years

Early Hominin Origins and Evolution: the Roots of Humanity

The Origins and Evolution of Early Homo

The Origins, Evolution, and Dispersal of Modern People

Our Last 10,000 Years: Agriculture, Population, and the Bioarchaeology of a Fundamental Transition

Evolution: Today and Tomorrow

Filters