Question 1

_______________ may occur because of mistakes made when DNA copies itself during cell divisions or because of environmental factors such as ultraviolet radiation from the sun.

Accepted Answer

A)   Mutations
B)   Noncoding DNA
C)   Epigenetics
D)   Twins

Question 2

For adults, heritability estimates for intelligence average around ______________.

Accepted Answer

A)   .10-.20
B)   .20-.30
C)   .60-.80
D)   .90-1.00

Question 3

Males should be promiscuous and drawn to sexual novelty, according to sociobiologists.

Accepted Answer

A) True 
 B)False

Question 4

The study of stable changes in the expression of a particular gene that occur without changes in DNA base sequences is called:

Accepted Answer

A)   molecular biology.
B)   epigenetics.
C)   evolutionary psychology.
D)   behavioral genetics.

Question 5

The human genome is estimated to contain about _______________ genes.

Accepted Answer

A)   7,000
B)   22,000
C)   46,000
D)   303,000

Question 6

_______________ is defined as a statistical estimate of the proportion of the total variance in some trait that is attributable to genetic differences among individuals within a group.

Accepted Answer

A)   Heredity
B)   Heritability
C)   Diversity
D)   Expressivity

Question 7

Which of the following best describes the position of most psychologists today on the nature-nurture issue?

Accepted Answer

A)   Nature and nurture interact to produce both our psychological and physical traits.
B)   Nature is more important in producing our physical traits, whereas nurture is more important in producing our psychological traits.
C)   Nature is more important in producing our psychological traits, whereas nurture is more important in producing our physical traits.
D)   Some of our psychological traits are produced primarily by nature and some by nurture, but nature is most important in producing our physical traits.

Question 8

The functional units of heredity that are located on chromosomes, are composed of DNA, and specify the structure of proteins are called:

Accepted Answer

A)   genomes.
B)   ribosomes.
C)   genes.
D)   nuclei.

Question 9

Evolutionary biologists often start with an observation about some characteristic and then try to account for it in evolutionary terms. How might they explain the difference in the plumage of male peacocks when compared to the females?

Accepted Answer

A good answer will include the following...

Question 10

According to sociobiologists, males typically have a large biological investment in each pregnancy they produce.

Accepted Answer

A) True 
 B)False

Question 11

Within every cell are rod-shaped structures called ribosomes that carry genes.

Accepted Answer

A) True 
 B)False

Question 12

Psychologists who emphasized the role of genes and nature in the creation of human diversity were called empiricists.

Accepted Answer

A) True 
 B)False

Question 13

The distribution of the scores on an IQ test approximates a bell-shaped curve.

Accepted Answer

A) True 
 B)False

Question 14

According to sociobiologists, it is evolutionarily beneficial for females to:

Accepted Answer

A)   attach themselves to dominant males.
B)   compete with other females for access to young males.
C)   have more male offspring than female offspring.
D)   be promiscuous and drawn to sexual novelty.

Question 15

According to your textbook, which of the following environmental factors is associated with reduced intelligence?

Accepted Answer

A)   poor prenatal care
B)   consumption of artificial sweetener
C)   exposure to video games
D)   intergenerational households

Question 16

"Junk DNA" has no real function and is not biologically important.

Accepted Answer

A) True 
 B)False

Question 17

What is epigenetics? How are epigenetic changes different than genetic changes?

Accepted Answer

A good answer will include the following...

Question 18

Describe the structure of DNA. Who discovered this structure?

Accepted Answer

A good answer will include the following...

Question 19

All of the cells of the human body (except for sperm and ova cells)  contain _______________ chromosomes.

Accepted Answer

A)   23
B)   46
C)   23,000
D)   46,000

Question 20

Epigenetic changes:

Accepted Answer

A)   affect the expression of genes and the traits they influence.
B)   alter the sequence of bases in DNA.
C)   occur before birth but not afterwards.
D)   are the same as mutations.

Exam 3: Genes, Evolution, and Environment

What is epigenetics? How are epigenetic changes different than genetic changes?

Correct AnswerverifiedA good answer will include the following...View AnswerShow Answer

According to sociobiologists, males typically have a large biological investment in each pregnancy they produce.

Correct AnswerverifiedShow Answer

Within every cell are rod-shaped structures called ribosomes that carry genes.

Correct AnswerverifiedShow Answer

The human genome is estimated to contain about _______________ genes.

Correct AnswerverifiedShow Answer

_______________ may occur because of mistakes made when DNA copies itself during cell divisions or because of environmental factors such as ultraviolet radiation from the sun.

Correct AnswerverifiedShow Answer

All of the cells of the human body (except for sperm and ova cells) contain _______________ chromosomes.

Correct AnswerverifiedShow Answer

According to your textbook, which of the following environmental factors is associated with reduced intelligence?

Correct AnswerverifiedShow Answer

Males should be promiscuous and drawn to sexual novelty, according to sociobiologists.

Correct AnswerverifiedShow Answer

According to sociobiologists, it is evolutionarily beneficial for females to:

Correct AnswerverifiedShow Answer

Psychologists who emphasized the role of genes and nature in the creation of human diversity were called empiricists.

Correct AnswerverifiedShow Answer

The distribution of the scores on an IQ test approximates a bell-shaped curve.

Correct AnswerverifiedShow Answer

Evolutionary biologists often start with an observation about some characteristic and then try to account for it in evolutionary terms. How might they explain the difference in the plumage of male peacocks when compared to the females?

Correct AnswerverifiedA good answer will include the following...View AnswerShow Answer

Epigenetic changes:

Correct AnswerverifiedShow Answer

"Junk DNA" has no real function and is not biologically important.

Correct AnswerverifiedShow Answer

_______________ is defined as a statistical estimate of the proportion of the total variance in some trait that is attributable to genetic differences among individuals within a group.

Correct AnswerverifiedShow Answer

The functional units of heredity that are located on chromosomes, are composed of DNA, and specify the structure of proteins are called:

Correct AnswerverifiedShow Answer

For adults, heritability estimates for intelligence average around ______________.

Correct AnswerverifiedShow Answer

Which of the following best describes the position of most psychologists today on the nature-nurture issue?

Correct AnswerverifiedShow Answer

The study of stable changes in the expression of a particular gene that occur without changes in DNA base sequences is called:

Correct AnswerverifiedShow Answer

Describe the structure of DNA. Who discovered this structure?

Correct AnswerverifiedA good answer will include the following...View AnswerShow Answer

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A good answer will include the following...
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