Question 1

Individuals with an allele for sickle-cell anemia are

Accepted Answer

A) more resistant to malaria. 
B) likely to be of Asian heritage. 
C) becoming more common in recent years in Canada. 
D) infertile and thus unable to pass on the gene to offspring. 
A) more resistant to malaria. 
B) likely to be of Asian heritage. 
C) becoming more common in recent years in Canada. 
D) infertile and thus unable to pass on the gene to offspring.

Question 2

Huntington's disease

Accepted Answer

A) is caused by two recessive alleles. 
B) can lead to depression and changes in personality. 
C) is apparent in young babies. 
D) is usually not fatal. 
A) is caused by two recessive alleles. 
B) can lead to depression and changes in personality. 
C) is apparent in young babies. 
D) is usually not fatal.

Question 3

Sickle-cell anemia

Accepted Answer

A) occurs in individuals who have one allele for normal blood cells and one allele for sickle-shaped cells. 
B) is not an inherited disorder. 
C) is not a serious health problem because it is easily cured. 
D) is becoming less common in successive generations of African descendants in North America. 
A) occurs in individuals who have one allele for normal blood cells and one allele for sickle-shaped cells. 
B) is not an inherited disorder. 
C) is not a serious health problem because it is easily cured. 
D) is becoming less common in successive generations of African descendants in North America.

Question 4

The chemical instructions of a ________ allele in an allele pair will be followed while those of a ________ allele will be ignored.

Accepted Answer

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

Question 5

Which pair has the most genes in common?

Accepted Answer

A) mother and daughter 
B) identical twins 
C) fraternal twins 
D) brother and sister 
A) mother and daughter 
B) identical twins 
C) fraternal twins 
D) brother and sister

Question 6

How many sperm does meiotic division result in for boys?

Accepted Answer

A) 2 
B) 4 
C) 8 
D) 1-sperm do not divide. 
A) 2 
B) 4 
C) 8 
D) 1-sperm do not divide.

Question 7

Activity level follows a polygenic pattern of inheritance. 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 8

When phenotypes are caused by the combined effect of many separate genes, the pattern of inheritance is referred to as

Accepted Answer

A) polygenic inheritance. 
B) dominant-recessive. 
C) codominant. 
D) sex-linked inheritance. 
A) polygenic inheritance. 
B) dominant-recessive. 
C) codominant. 
D) sex-linked inheritance.

Question 9

The problems associated with twin studies and adoption studies

Accepted Answer

A) are not serious enough to cause concern. 
B) can be minimized by using both kinds of studies to see if they yield similar results. 
C) can be minimized by using only one kind of study so potential flaws are not multiplied. 
D) are insurmountable. 
A) are not serious enough to cause concern. 
B) can be minimized by using both kinds of studies to see if they yield similar results. 
C) can be minimized by using only one kind of study so potential flaws are not multiplied. 
D) are insurmountable.

Question 10

The fact that children with genes for average intelligence can actually develop either below-average, average, or above-average intelligence depending on their experiences best illustrates which of the following themes of development?

Accepted Answer

A) Early development is related to later development, but not perfectly. 
B) Development is always jointly influenced by heredity and environment. 
C) Children help determine their own environment. 
D) Development in different domains is connected. 
A) Early development is related to later development, but not perfectly. 
B) Development is always jointly influenced by heredity and environment. 
C) Children help determine their own environment. 
D) Development in different domains is connected.

Question 11

Abner has a dominant allele for a full head of hair and a recessive allele for male pattern baldness. You would expect Abner to

Accepted Answer

A) be completely bald. 
B) be partially bald. 
C) have a full head of hair. 
D) have thin hair. 
A) be completely bald. 
B) be partially bald. 
C) have a full head of hair. 
D) have thin hair.

Question 12

The fact that parents both pass on many of their genes to their children and provide the early environment for them is referred to as

Accepted Answer

A) niche-picking. 
B) a passive gene-environment relation. 
C) an evocative gene-environment relation. 
D) a reaction range. 
A) niche-picking. 
B) a passive gene-environment relation. 
C) an evocative gene-environment relation. 
D) a reaction range.

Question 13

In vitro fertilization is a procedure in which

Accepted Answer

A) an egg is fertilized by sperm in a laboratory dish and then placed in the mother's uterus. 
B) sperm is injected into the mother's uterus to fertilize her egg. 
C) a fertilized egg is extracted from one woman's uterus and then placed in another woman's uterus. 
D) a surrogate mother is used to carry another couple's developing fetus. 
A) an egg is fertilized by sperm in a laboratory dish and then placed in the mother's uterus. 
B) sperm is injected into the mother's uterus to fertilize her egg. 
C) a fertilized egg is extracted from one woman's uterus and then placed in another woman's uterus. 
D) a surrogate mother is used to carry another couple's developing fetus.

Question 14

A potential flaw of twin studies is that

Accepted Answer

A) monozygotic twins do not always have identical genes. 
B) dizygotic twins do not have identical genes. 
C) parents may treat identical twins more similarly than they treat fraternal twins. 
D) parents may treat fraternal twins more similarly than they treat identical twins. 
A) monozygotic twins do not always have identical genes. 
B) dizygotic twins do not have identical genes. 
C) parents may treat identical twins more similarly than they treat fraternal twins. 
D) parents may treat fraternal twins more similarly than they treat identical twins.

Question 15

Inherited disorders

Accepted Answer

A) are more often caused by recessive alleles than by dominant alleles. 
B) are more often caused by dominant alleles than by recessive alleles. 
C) are due to dominant alleles about half the time. 
D) do not usually seriously impair a child's development. 
A) are more often caused by recessive alleles than by dominant alleles. 
B) are more often caused by dominant alleles than by recessive alleles. 
C) are due to dominant alleles about half the time. 
D) do not usually seriously impair a child's development.

Question 16

The concept of nonshared environmental influences means that

Accepted Answer

A) parents provide the same environment for all of their children. 
B) siblings will be very similar to each other because they shared the same home environment. 
C) children's genes do not influence their experiences. 
D) parents may have higher expectations for school achievement for one child than another. 
A) parents provide the same environment for all of their children. 
B) siblings will be very similar to each other because they shared the same home environment. 
C) children's genes do not influence their experiences. 
D) parents may have higher expectations for school achievement for one child than another.

Question 17

The incidence of Down syndrome

Accepted Answer

A) increases as the mother gets older. 
B) decreases as the mother gets older. 
C) decreases as the father gets older. 
D) is unrelated to parental age. 
A) increases as the mother gets older. 
B) decreases as the mother gets older. 
C) decreases as the father gets older. 
D) is unrelated to parental age.

Question 18

An XYY complement of sex chromosomes is associated with which of the following characteristics?

Accepted Answer

A) problems perceiving spatial relations 
B) short stature 
C) intellectual delay 
D) susceptibility to heart defects 
A) problems perceiving spatial relations 
B) short stature 
C) intellectual delay 
D) susceptibility to heart defects

Question 19

The textbook's example study of extraversion in twins revealed

Accepted Answer

A) there was no evidence that extraversion is inherited. 
B) identical twins showed more similar levels of extraversion than fraternal twins. 
C) fraternal twins showed more similar levels of extraversion than identical twins. 
D) there was considerable evidence that extraversion was influenced primarily by the environment. 
A) there was no evidence that extraversion is inherited. 
B) identical twins showed more similar levels of extraversion than fraternal twins. 
C) fraternal twins showed more similar levels of extraversion than identical twins. 
D) there was considerable evidence that extraversion was influenced primarily by the environment.

Question 20

The term reaction range refers to the concept that

Accepted Answer

A) one phenotype can lead to many different genotypes. 
B) one genotype can lead to different phenotypes. 
C) one genotype leads to one and only one phenotype. 
D) phenotypes are unrelated to genotypes. 
A) one phenotype can lead to many different genotypes. 
B) one genotype can lead to different phenotypes. 
C) one genotype leads to one and only one phenotype. 
D) phenotypes are unrelated to genotypes.

Individuals with an allele for sickle-cell anemia are

Huntington's disease

Sickle-cell anemia

The chemical instructions of a allele in an allele pair will be followed while those of a allele will be ignored.

Which pair has the most genes in common?

How many sperm does meiotic division result in for boys?

Activity level follows a polygenic pattern of inheritance. This means that

When phenotypes are caused by the combined effect of many separate genes, the pattern of inheritance is referred to as

The problems associated with twin studies and adoption studies

The fact that children with genes for average intelligence can actually develop either below-average, average, or above-average intelligence depending on their experiences best illustrates which of the following themes of development?

Abner has a dominant allele for a full head of hair and a recessive allele for male pattern baldness. You would expect Abner to

The fact that parents both pass on many of their genes to their children and provide the early environment for them is referred to as

In vitro fertilization is a procedure in which

A potential flaw of twin studies is that

Inherited disorders

The concept of nonshared environmental influences means that

The incidence of Down syndrome

An XYY complement of sex chromosomes is associated with which of the following characteristics?

The textbook's example study of extraversion in twins revealed

The term reaction range refers to the concept that

Child Development: Theories and Themes

Research in Child Development

Prenatal Development and Birth

Physical Development in Infants and Toddlers

Cognition in Infants and Toddlers

Social and Emotional Development in Infants and Toddlers

Physical Growth in Preschool Children

Cognitive Development in Preschool Children

Social and Emotional Development in Preschool Children

Physical Development in Middle Childhood

Cognitive Development in Middle Childhood

Social and Emotional Development in Middle Childhood

Physical Growth in Adolescents

Cognitive Processes in Adolescents

Social and Emotional Development in Adolescents

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Exam 3: Genetic Bases of Child Development

Individuals with an allele for sickle-cell anemia are

Huntington's disease

Sickle-cell anemia

The chemical instructions of a ________ allele in an allele pair will be followed while those of a ________ allele will be ignored.

Which pair has the most genes in common?

How many sperm does meiotic division result in for boys?

Activity level follows a polygenic pattern of inheritance. This means that

When phenotypes are caused by the combined effect of many separate genes, the pattern of inheritance is referred to as

The problems associated with twin studies and adoption studies

The fact that children with genes for average intelligence can actually develop either below-average, average, or above-average intelligence depending on their experiences best illustrates which of the following themes of development?

Abner has a dominant allele for a full head of hair and a recessive allele for male pattern baldness. You would expect Abner to

The fact that parents both pass on many of their genes to their children and provide the early environment for them is referred to as

In vitro fertilization is a procedure in which

A potential flaw of twin studies is that

Inherited disorders

The concept of nonshared environmental influences means that

The incidence of Down syndrome

An XYY complement of sex chromosomes is associated with which of the following characteristics?

The textbook's example study of extraversion in twins revealed

The term reaction range refers to the concept that

Child Development: Theories and Themes

Research in Child Development

Prenatal Development and Birth

Physical Development in Infants and Toddlers

Cognition in Infants and Toddlers

Social and Emotional Development in Infants and Toddlers

Physical Growth in Preschool Children

Cognitive Development in Preschool Children

Social and Emotional Development in Preschool Children

Physical Development in Middle Childhood

Cognitive Development in Middle Childhood

Social and Emotional Development in Middle Childhood

Physical Growth in Adolescents

Cognitive Processes in Adolescents

Social and Emotional Development in Adolescents

Filters

The chemical instructions of a allele in an allele pair will be followed while those of a allele will be ignored.