Question 1

Foods containing phenylalanine are problematic for people with

Accepted Answer

A)   Huntington's disease.
B)   Parkinson's disease.
C)   PKU.
D)   irritable bowel syndrome.

Question 2

How do genes control the creation of proteins in the cell?

Accepted Answer

A)   Chromosomes carry the genes that specify how proteins can be strung together to form amino acids.
B)   Genes on chromosomes specify which amino acids will be joined together, in order, to make each particular protein.
C)   Genes on chromosomes include small particles that regulate how proteins enter and exit the cell.
D)   Genes provide the cell with the energy that it needs to make proteins.

Question 3

When you are walking across campus, the movement of the breeze may change the way your skin cells generate proteins. This is an example of

Accepted Answer

A)   gene expression.
B)   gene therapy.
C)   a discordant trait.
D)   heritability.

Question 4

Removing _______ from an infant's diet can allay the effects of the single-gene disorder known as Phenylketonuria.

Accepted Answer

The answer of Removing _______ from an infant's diet can...

Question 5

Which of the following are subunits of proteins?

Accepted Answer

A)   Genes
B)   Ribosomes
C)   Amino acids
D)   Nucleotides

Question 6

Though you inherit genes from both parents, you are not a carbon copy of either. Explain why by discussing alleles and natural selection.

Accepted Answer

An individual inherits a set of 23 pairs...

Question 7

Which variable plays the most significant role in gene-environment interaction leading to the development of schizophrenia?

Accepted Answer

A)   The presence of twin siblings
B)   The occurrence of stressful events
C)   The size of one's extended family
D)   The incidence of color blindness in one's family

Question 8

Genes with slightly different instructions for making the same protein are called

Accepted Answer

A)   nucleotides.
B)   recessives.
C)   mitochondria.
D)   alleles.

Question 9

Gene expression is the process by which a cell

Accepted Answer

A)   directs a gene to make its protein.
B)   extracts genes from DNA strands.
C)   assembles amino acids to form chromosomes.
D)   unpacks the DNA-making instructions in the genome.

Question 10

One of the best methods of determining the influence of confounding variables on the heritability of human traits is to conduct a

Accepted Answer

A)   cross-sectional study.
B)   study of identical twins.
C)   case study.
D)   study of fraternal twins.

Question 11

One issue with studies of heritability that compare monozygotic and dizygotic twins is that such comparisons

Accepted Answer

A)   overestimate the influence of genes on behavior.
B)   underestimate the influence of genes on behavior.
C)   overestimate the influence of the environment on behavior.
D)   cannot differentiate between prenatal and postnatal environments.

Question 12

A mutation results when a gene is

Accepted Answer

A)   dominant.
B)   miscopied.
C)   converted into a protein.
D)   divided in two.

Question 13

Variations in eye color are the result of alleles that differ in terms of

Accepted Answer

A)   how much pigment they make.
B)   what pigment they make.
C)   how expression of the allele affects the ability of the iris to change when it encounters light.
D)   how much of a particular receptor will be expressed in the retina.

Question 14

Schizophrenia is characterized by

Accepted Answer

A)   mood swings.
B)   memory lapses.
C)   disordered thinking.
D)   impulsive behavior.

Question 15

Which statement best describes a valid gene-environment interaction?

Accepted Answer

A)   Mice reared by mothers of different strains always display the same exploratory behavior.
B)   Chimps raised in an impoverished environment were just as good at navigating mazes as chimps raised in an enriched environment.
C)   Identical twins adopted by different families often display many behaviors typical of their adoptive family.
D)   Rhesus monkeys reared in captivity often display the same level of anxious behavior as rhesus monkeys reared in the wild.

Question 16

The belief that genes determine everything about us, including our behavior, is referred to as

Accepted Answer

A)   nature-nurture theory.
B)   genetic determinism.
C)   psychological relativism.
D)   gene therapy.

Question 17

An allele is _______ when it affects an individual's phenotype, regardless of what other allele the individual carries for that gene.

Accepted Answer

A)   recessive
B)   mediating
C)   dominant
D)   subdominant

Question 18

Matters of gene-environment interaction form the basis of the study of

Accepted Answer

A)   replication.
B)   mutation.
C)   genetics.
D)   epigenetics.

Question 19

A certain flower has a genotype with an allele for yellow petals and an allele for blue petals, but it grows only blue petals. Which statement could be true?

Accepted Answer

A)   Both alleles are recessive.
B)   Both alleles are dominant.
C)   Only the allele for blue petals is recessive.
D)   Only the allele for yellow petals is recessive.

Question 20

In cases where only one of two identical twins develops schizophrenia, all of the following factors may be responsible except

Accepted Answer

A)   birth weight.
B)   birth order.
C)   nutrition.
D)   nurturing.

Exam 4: Genes, Environment, and Behavior

Which statement best describes a valid gene-environment interaction?

Correct AnswerverifiedShow Answer

An allele is _______ when it affects an individual's phenotype, regardless of what other allele the individual carries for that gene.

Correct AnswerverifiedShow Answer

The belief that genes determine everything about us, including our behavior, is referred to as

Correct AnswerverifiedShow Answer

How do genes control the creation of proteins in the cell?

Correct AnswerverifiedShow Answer

A mutation results when a gene is

Correct AnswerverifiedShow Answer

Removing _______ from an infant's diet can allay the effects of the single-gene disorder known as Phenylketonuria.

Correct AnswerverifiedShow Answer

Gene expression is the process by which a cell

Correct AnswerverifiedShow Answer

When you are walking across campus, the movement of the breeze may change the way your skin cells generate proteins. This is an example of

Correct AnswerverifiedShow Answer

Foods containing phenylalanine are problematic for people with

Correct AnswerverifiedShow Answer

A certain flower has a genotype with an allele for yellow petals and an allele for blue petals, but it grows only blue petals. Which statement could be true?

Correct AnswerverifiedShow Answer

Genes with slightly different instructions for making the same protein are called

Correct AnswerverifiedShow Answer

Matters of gene-environment interaction form the basis of the study of

Correct AnswerverifiedShow Answer

Which of the following are subunits of proteins?

Correct AnswerverifiedShow Answer

In cases where only one of two identical twins develops schizophrenia, all of the following factors may be responsible except

Correct AnswerverifiedShow Answer

Which variable plays the most significant role in gene-environment interaction leading to the development of schizophrenia?

Correct AnswerverifiedShow Answer

Variations in eye color are the result of alleles that differ in terms of

Correct AnswerverifiedShow Answer

One issue with studies of heritability that compare monozygotic and dizygotic twins is that such comparisons

Correct AnswerverifiedShow Answer

Though you inherit genes from both parents, you are not a carbon copy of either. Explain why by discussing alleles and natural selection.

Correct AnswerverifiedAn individual inherits a set of 23 pairs...View AnswerShow Answer

One of the best methods of determining the influence of confounding variables on the heritability of human traits is to conduct a

Correct AnswerverifiedShow Answer

Schizophrenia is characterized by

Correct AnswerverifiedShow Answer

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An individual inherits a set of 23 pairs...
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