Question 1

When alleles in a chromosome pair are identical,they are said to be

Accepted Answer

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

Question 2

Perry was born with phenylketonuria (PKU)which means that

Accepted Answer

A) she is mentally retarded and has an extra 21st chromosome. 
B) phenylalanine can accumulate and poison her nervous system. 
C) she will develop normally until middle adulthood,at which time her nervous system will begin to deteriorate. 
D) she has a missing chromosome and will be severely retarded. 
A) she is mentally retarded and has an extra 21st chromosome. 
B) phenylalanine can accumulate and poison her nervous system. 
C) she will develop normally until middle adulthood,at which time her nervous system will begin to deteriorate. 
D) she has a missing chromosome and will be severely retarded.

Question 3

Sadie is depressed.You would be most likely to find that

Accepted Answer

A) Sadie's identical twin is depressed. 
B) Sadie's adoptive mother is depressed. 
C) Sadie's brother is depressed. 
D) no one else in Sadie's family is depressed. 
A) Sadie's identical twin is depressed. 
B) Sadie's adoptive mother is depressed. 
C) Sadie's brother is depressed. 
D) no one else in Sadie's family is depressed.

Question 4

Harold has Klinefelter's syndrome which is caused by a(n)__________ chromosome pattern.

Accepted Answer

A) XYY 
B) XXY 
C) Y 
D) YY 
A) XYY 
B) XXY 
C) Y 
D) YY

Question 5

Although environmental factors are important,they usually affect each child in a unique way,which makes siblings differ.

Accepted Answer

A) True 
 B)False

Question 6

The disorder in which a person's nervous system degenerates during infancy is called

Accepted Answer

A) Tay-Sachs disease. 
B) albinism. 
C) cystic fibrosis. 
D) Huntington's disease. 
A) Tay-Sachs disease. 
B) albinism. 
C) cystic fibrosis. 
D) Huntington's disease.

Question 7

If a trait is strongly influenced by genetic factors,you would expect to find that

Accepted Answer

A) adopted children resemble their biological parents more than their adoptive parents on that trait. 
B) adopted children resemble their adoptive parents more than their biological parents on that trait. 
C) dizygotic twins would be more similar on that trait than monozygotic twins would be. 
D) dizygotic twins would be more similar on that trait than siblings would be. 
A) adopted children resemble their biological parents more than their adoptive parents on that trait. 
B) adopted children resemble their adoptive parents more than their biological parents on that trait. 
C) dizygotic twins would be more similar on that trait than monozygotic twins would be. 
D) dizygotic twins would be more similar on that trait than siblings would be.

Question 8

The most common reason for fertilized eggs to spontaneously abort shortly after conception is

Accepted Answer

A) abnormal autosomal chromosomes. 
B) abnormal sex chromosomes. 
C) environmental teratogens. 
D) maternal disease. 
A) abnormal autosomal chromosomes. 
B) abnormal sex chromosomes. 
C) environmental teratogens. 
D) maternal disease.

Question 9

Leslie is homozygous for hair type.Therefore,she must have

Accepted Answer

A) curly hair. 
B) straight hair. 
C) one allele for curly hair and one allele for straight hair. 
D) either two alleles for curly hair or two alleles for straight hair. 
A) curly hair. 
B) straight hair. 
C) one allele for curly hair and one allele for straight hair. 
D) either two alleles for curly hair or two alleles for straight hair.

Question 10

Individuals with Down syndrome show which of the following characteristics?

Accepted Answer

A) mental retardation 
B) aggression 
C) an extra X chromosome 
D) a lack of sexual development 
A) mental retardation 
B) aggression 
C) an extra X chromosome 
D) a lack of sexual development

Question 11

Cornelius and Janelle sought genetic counseling because of concern that they might have children with sickle-cell anemia.The counselor determined they each have one recessive allele for sickle-cells and one dominant allele for healthy blood cells.The counselor would tell them that they have a

Accepted Answer

A) 100% chance of having a child with sickle-cell anemia. 
B) 25% chance of having a child with sickle-cell anemia and a 50% chance of having a child with sickle-cell trait. 
C) 25% chance of having a child with sickle-cell trait and a 50% chance of having a child with sickle-cell anemia. 
D) 75% chance of having a child with sickle-cell anemia. 
A) 100% chance of having a child with sickle-cell anemia. 
B) 25% chance of having a child with sickle-cell anemia and a 50% chance of having a child with sickle-cell trait. 
C) 25% chance of having a child with sickle-cell trait and a 50% chance of having a child with sickle-cell anemia. 
D) 75% chance of having a child with sickle-cell anemia.

Question 12

A homozygous individual has two alleles that are the same.

Accepted Answer

A) True 
 B)False

Question 13

Each sperm and egg contains 46 chromosomes.

Accepted Answer

A) True 
 B)False

Question 14

The traits controlled by single genes usually represent "either-or" phenotypes,while traits controlled by many genes typically represent an entire range of different outcomes.

Accepted Answer

A) True 
 B)False

Question 15

Huntington's disease involves progressive deterioration of the nervous system,which causes

Accepted Answer

A) muscle spasms,depression,and personality changes. 
B) schizophrenia. 
C) an accumulation of poisonous substances in the body. 
D) sterility. 
A) muscle spasms,depression,and personality changes. 
B) schizophrenia. 
C) an accumulation of poisonous substances in the body. 
D) sterility.

Question 16

Lucas has one allele for normal blood cells and one allele for sickle-shaped cells.Lucas' blood cell alleles are

Accepted Answer

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

Question 17

Your professor mentions in a lecture that activity level follows a polygenic pattern of inheritance.You,having already read Chapter 2 in your textbook,realize this means that

Accepted Answer

A) activity level is a recessive trait. 
B) a single gene determines activity level. 
C) there is no evidence of a genetic influence on activity level. 
D) activity level is determined by the combination of many genes. 
A) activity level is a recessive trait. 
B) a single gene determines activity level. 
C) there is no evidence of a genetic influence on activity level. 
D) activity level is determined by the combination of many genes.

Question 18

A female who is short,has limited development of secondary sex characteristics,and who has problems with spatial relations would have which of the following disorders?

Accepted Answer

A) Klinefelter's syndrome 
B) XYY complement 
C) Turner's syndrome 
D) XXX syndrome 
A) Klinefelter's syndrome 
B) XYY complement 
C) Turner's syndrome 
D) XXX syndrome

Question 19

Who provides the best example of niche-picking?

Accepted Answer

A) musically-talented Mosi who chooses to spend his free time listening to music and practicing his guitar 
B) natural singer Vanessa who is often asked to sing by her family and friends 
C) tone-deaf Toneesha whose choir director asks her to simply mouth the words,rather than sing during performances 
D) piano prodigy Philip who not only inherited musical talent from his symphony-playing parents,but was encouraged by his parents to begin playing a musical instrument at an early age 
A) musically-talented Mosi who chooses to spend his free time listening to music and practicing his guitar 
B) natural singer Vanessa who is often asked to sing by her family and friends 
C) tone-deaf Toneesha whose choir director asks her to simply mouth the words,rather than sing during performances 
D) piano prodigy Philip who not only inherited musical talent from his symphony-playing parents,but was encouraged by his parents to begin playing a musical instrument at an early age

Question 20

Wendy's development was normal through childhood and early adulthood.However,during her 40s she began to experience muscle spasms,depression,and personality changes.Which of the following disorders or diseases is most likely to be causing her symptoms?

Accepted Answer

A) phenylketonuria 
B) Huntington's disease 
C) Turner's syndrome 
D) XXX syndrome 
A) phenylketonuria 
B) Huntington's disease 
C) Turner's syndrome 
D) XXX syndrome

When alleles in a chromosome pair are identical,they are said to be

Perry was born with phenylketonuria (PKU)which means that

Sadie is depressed.You would be most likely to find that

Harold has Klinefelter's syndrome which is caused by a(n)__________ chromosome pattern.

Although environmental factors are important,they usually affect each child in a unique way,which makes siblings differ.

The disorder in which a person's nervous system degenerates during infancy is called

If a trait is strongly influenced by genetic factors,you would expect to find that

The most common reason for fertilized eggs to spontaneously abort shortly after conception is

Leslie is homozygous for hair type.Therefore,she must have

Individuals with Down syndrome show which of the following characteristics?

Cornelius and Janelle sought genetic counseling because of concern that they might have children with sickle-cell anemia.The counselor determined they each have one recessive allele for sickle-cells and one dominant allele for healthy blood cells.The counselor would tell them that they have a

A homozygous individual has two alleles that are the same.

Each sperm and egg contains 46 chromosomes.

The traits controlled by single genes usually represent "either-or" phenotypes,while traits controlled by many genes typically represent an entire range of different outcomes.

Huntington's disease involves progressive deterioration of the nervous system,which causes

Lucas has one allele for normal blood cells and one allele for sickle-shaped cells.Lucas' blood cell alleles are

Your professor mentions in a lecture that activity level follows a polygenic pattern of inheritance.You,having already read Chapter 2 in your textbook,realize this means that

A female who is short,has limited development of secondary sex characteristics,and who has problems with spatial relations would have which of the following disorders?

Who provides the best example of niche-picking?

Wendy's development was normal through childhood and early adulthood.However,during her 40s she began to experience muscle spasms,depression,and personality changes.Which of the following disorders or diseases is most likely to be causing her symptoms?

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Prenatal Development, Birth and the Newborn

Growth and Health

Perceptual and Motor Development

Theories of Cognitive Development

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Exam 2: Genetic Bases of Child Development

When alleles in a chromosome pair are identical,they are said to be

Perry was born with phenylketonuria (PKU)which means that

Sadie is depressed.You would be most likely to find that

Harold has Klinefelter's syndrome which is caused by a(n)__________ chromosome pattern.

Although environmental factors are important,they usually affect each child in a unique way,which makes siblings differ.

The disorder in which a person's nervous system degenerates during infancy is called

If a trait is strongly influenced by genetic factors,you would expect to find that

The most common reason for fertilized eggs to spontaneously abort shortly after conception is

Leslie is homozygous for hair type.Therefore,she must have

Individuals with Down syndrome show which of the following characteristics?

Cornelius and Janelle sought genetic counseling because of concern that they might have children with sickle-cell anemia.The counselor determined they each have one recessive allele for sickle-cells and one dominant allele for healthy blood cells.The counselor would tell them that they have a

A homozygous individual has two alleles that are the same.

Each sperm and egg contains 46 chromosomes.

The traits controlled by single genes usually represent "either-or" phenotypes,while traits controlled by many genes typically represent an entire range of different outcomes.

Huntington's disease involves progressive deterioration of the nervous system,which causes

Lucas has one allele for normal blood cells and one allele for sickle-shaped cells.Lucas' blood cell alleles are

Your professor mentions in a lecture that activity level follows a polygenic pattern of inheritance.You,having already read Chapter 2 in your textbook,realize this means that

A female who is short,has limited development of secondary sex characteristics,and who has problems with spatial relations would have which of the following disorders?

Who provides the best example of niche-picking?

Wendy's development was normal through childhood and early adulthood.However,during her 40s she began to experience muscle spasms,depression,and personality changes.Which of the following disorders or diseases is most likely to be causing her symptoms?

The Science of Child Development

Prenatal Development, Birth and the Newborn

Growth and Health

Perceptual and Motor Development

Theories of Cognitive Development

Cognitive Processes and Academic Skills

Intelligence and Individual Differences in Cognition

Language and Communication

Emotional Development

Understanding Self and Others

Moral Understanding and Behavior

Gender and Development

Family Relationships

Influences Beyond the Family

Filters