Question 1

Which of the following is true about adoption?

Accepted Answer

A)   In North America, more unwed mothers give up their babies than in the past.
B)   Children adopted after infancy fare as well or better than those adopted as infants.
C)   In North America, the availability of healthy babies has declined.
D)   Fewer adoptive parents are accepting children who have known developmental problems.

Question 2

Which of the following serious diseases is due to dominant alleles?

Accepted Answer

A)   Cooley's anemia
B)   sickle cell anemia
C)   Huntington disease
D)   hemophilia

Question 3

Research suggests that by itself, the DD genotype is

Accepted Answer

A)   related to impulsivity.
B)   unrelated to impulsivity, overactivity, or oppositional behavior.
C)   related to overactivity.
D)   related to oppositional behavior.

Question 4

In incomplete dominance,

Accepted Answer

A)   both alleles are expressed in the phenotype.
B)   children have a 25 percent chance of being carriers.
C)   children have a 50 percent chance of inheriting the disorder.
D)   one allele is expressed in the phenotype.

Question 5

Research demonstrates that

Accepted Answer

A)   it takes a change in several base pairs to influence human traits.
B)   approximately 75 percent of chimpanzee and human DNA is identical.
C)   even at the microscopic level, biological events are the result of both genetic and nongenetic forces.
D)   simpler species have far more proteins than humans or primates.

Question 6

Mr. and Mrs. White are told that their son has the most common chromosomal disorder. The Whites' son has _________ syndrome.

Accepted Answer

A)   Klinefelter
B)   Down
C)   Triple X
D)   Turner

Question 7

Genomic imprinting

Accepted Answer

A)   can be triggered by smoking or exposure to environmental pollutants, such as mercury or lead.
B)   occurs when alleles are chemically marked in such a way that one pair member is activated, regardless of its makeup.
C)   is more likely to affect males because their sex chromosomes do not match.
D)   is always permanent, cannot be erased in the next generation, and occurs in all offspring if it occurs in one.

Question 8

Which of the following is true about crossing over?

Accepted Answer

A)   It results in a new cell called a zygote.
B)   It creates new hereditary combinations.
C)   It increases the probability that nontwin siblings will be genetically identical.
D)   It decreases the chances that some members of a species will survive ever-changing environments.

Question 9

Range of reaction reveals that

Accepted Answer

A)   individuals usually respond similarly to the same environment.
B)   unique blends of heredity and environment lead to both similarities and differences in behavior.
C)   twins are more alike than other siblings because they are raised in the same environment.
D)   our genes influence the environments to which we are exposed.

Question 10

Which of the following individuals is the most likely to score high in impulsivity, according to research on smoking?

Accepted Answer

A)   Daniel, who has a DD genetic makeup and a mother who smoked during pregnancy
B)   Reba, who has a DD genetic makeup and a nonsmoking mother
C)   John, who has a DD genetic makeup and a mother who smoked prior to becoming pregnant
D)   Samantha, who has a DB genetic makeup and a mother who smoked during pregnancy

Question 11

Taylor's twenty-third pair of chromosome is XY. Taylor

Accepted Answer

A)   has PKU.
B)   has Down syndrome.
C)   is male.
D)   is female.

Question 12

In a kinship study of intelligence, which of the following sibling pairs will likely share a high correlation?

Accepted Answer

A)   Max and Martin, nontwin brothers
B)   Jabar and Tobias, identical twins
C)   Marci and Sonia, fraternal twins
D)   Mary Jane and Susan, nontwin sisters

Question 13

The largest barrier to the education of girls worldwide is/are

Accepted Answer

A)   cultural beliefs about gender roles.
B)   a reluctance to give up a daughter's work at home.
C)   that many schools charge parents a fee for each child enrolled.
D)   a limited number of schools in developing areas.

Question 14

Most children with sex chromosome disorders

Accepted Answer

A)   suffer from mental retardation.
B)   have verbal difficulties.
C)   have trouble with spatial relations.
D)   have very specific intellectual problems.

Question 15

When a harmful allele is carried on the X chromosome,

Accepted Answer

A)   females are more likely to be affected.
B)   males are more likely to be affected.
C)   50 percent of the female children are likely to have the disorder.
D)   50 percent of the male children are likely to be carriers of the disorder.

Question 16

The most frequently occurring form of Down syndrome results from

Accepted Answer

A)   an extra broken piece of a twenty-first chromosome attaching to another chromosome.
B)   an error during the early stages of mitosis.
C)   a failure of the twenty-first pair of chromosomes to separate during meiosis.
D)   the inheritance of an extra X chromosome.

Question 17

How does educating girls impact the welfare of families, societies, and future generations? What impact does it have on family health?

Accepted Answer

Although schooling is vital for all chil...

Question 18

____________ strongly predicts women's preventive health behavior.

Accepted Answer

A)   Age
B)   Marital status
C)   IQ
D)   Years of schooling

Question 19

The relationship between heredity and the environment is

Accepted Answer

A)   a one-way street.
B)   strongest for intelligence.
C)   best measured using heritability estimates.
D)   bidirectional.

Question 20

Mr. and Mrs. Sedgwick's child was diagnosed with Turner syndrome. Their child has a(n)  _________ chromosome.

Accepted Answer

A)   extra X
B)   missing X
C)   missing Y
D)   extra Y

Exam 2: Genetic and Environmental Foundations

The most frequently occurring form of Down syndrome results from

Correct AnswerverifiedShow Answer

Which of the following is true about adoption?

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When a harmful allele is carried on the X chromosome,

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Which of the following serious diseases is due to dominant alleles?

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Which of the following individuals is the most likely to score high in impulsivity, according to research on smoking?

Correct AnswerverifiedShow Answer

Mr. and Mrs. White are told that their son has the most common chromosomal disorder. The Whites' son has _________ syndrome.

Correct AnswerverifiedShow Answer

The relationship between heredity and the environment is

Correct AnswerverifiedShow Answer

How does educating girls impact the welfare of families, societies, and future generations? What impact does it have on family health?

Correct AnswerverifiedAlthough schooling is vital for all chil...View AnswerShow Answer

Research suggests that by itself, the DD genotype is

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Most children with sex chromosome disorders

Correct AnswerverifiedShow Answer

The largest barrier to the education of girls worldwide is/are

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____________ strongly predicts women's preventive health behavior.

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Taylor's twenty-third pair of chromosome is XY. Taylor

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Which of the following is true about crossing over?

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Range of reaction reveals that

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In incomplete dominance,

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Mr. and Mrs. Sedgwick's child was diagnosed with Turner syndrome. Their child has a(n) _________ chromosome.

Correct AnswerverifiedShow Answer

Genomic imprinting

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Research demonstrates that

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In a kinship study of intelligence, which of the following sibling pairs will likely share a high correlation?

Correct AnswerverifiedShow Answer

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Although schooling is vital for all chil...
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