Question 1

Fragile-X syndrome usually occurs as a result of​

Accepted Answer

A) paternal age. 
B) maternal age. 
C) unusually high codon repeats on the X chromosome. 
D) the inability to metabolize phenylalanine. 
A) paternal age. 
B) maternal age. 
C) unusually high codon repeats on the X chromosome. 
D) the inability to metabolize phenylalanine.

Question 2

In humans,myelination is not complete until

Accepted Answer

A) the beginning of the fetal period of prenatal development. 
B) birth. 
C) 2 years of age. 
D) early adulthood. 
A) the beginning of the fetal period of prenatal development. 
B) birth. 
C) 2 years of age. 
D) early adulthood.

Question 3

What is spina bifida?​

Accepted Answer

Spina bifida is a condition that results

Question 4

Compared with non-twin siblings,fraternal twins​

Accepted Answer

A) experience the same level of genetic and environmental influence. 
B) have more genes in common. 
C) have fewer environmental influences in common. 
D) have more environmental influences in common. 
A) experience the same level of genetic and environmental influence. 
B) have more genes in common. 
C) have fewer environmental influences in common. 
D) have more environmental influences in common.

Question 5

Calico cats with two sex chromosomes​

Accepted Answer

A) can be male or female. 
B) are almost always male, because the calico condition is sex-linked. 
C) are always female, because the calico condition results from x-inactivation. 
D) are the result of spontaneous mutations that do not affect the sex chromosomes. 
A) can be male or female. 
B) are almost always male, because the calico condition is sex-linked. 
C) are always female, because the calico condition results from x-inactivation. 
D) are the result of spontaneous mutations that do not affect the sex chromosomes.

Question 6

Because the heritability of height is 81 percent,and the heritability of adult body mass index (BMI)is 59 percent,we can conclude that genetics play a stronger role in the development of height than BMI

Accepted Answer

A) True 
 B)False

Question 7

During the development of your four-year-old nephew's brain,a number of neurons died and many synapses were pruned.As a result,when he is older,he will​

Accepted Answer

A) suffer from intellectual disability 
B) probably be totally normal. 
C) not be able to learn to talk. 
D) have normal speech, but his intellectual functioning will be lower than normal. 
A) suffer from intellectual disability 
B) probably be totally normal. 
C) not be able to learn to talk. 
D) have normal speech, but his intellectual functioning will be lower than normal.

Question 8

The process in which chromosomes exchange equivalent sections of genetic material is known as​

Accepted Answer

A) linkage. 
B) crossing over. 
C) meiosis. 
D) gene expression. 
A) linkage. 
B) crossing over. 
C) meiosis. 
D) gene expression.

Question 9

Synaptic pruning​

Accepted Answer

A) is a normal part of brain development. 
B) is associated with mental retardation, and results in too few connections. 
C) results from insufficient amounts of neurotrophins. 
D) results from excess amounts of neurotrophins. 
A) is a normal part of brain development. 
B) is associated with mental retardation, and results in too few connections. 
C) results from insufficient amounts of neurotrophins. 
D) results from excess amounts of neurotrophins.

Question 10

The leading known nongenetic cause of intellectual disability is​

Accepted Answer

A) alcohol use by pregnant women. 
B) marijuana use by the partner of a pregnant woman. 
C) prenatal exposure to lead-based paints. 
D) environmental asbestos exposure during pregnancy. 
A) alcohol use by pregnant women. 
B) marijuana use by the partner of a pregnant woman. 
C) prenatal exposure to lead-based paints. 
D) environmental asbestos exposure during pregnancy.

Question 11

Growth cones are defined as

Accepted Answer

A) the influences of neighboring cells on differentiation. 
B) attractant chemicals that guide axon growth and inhibit meiosis. 
C) death genes that are expressed when a cell "decides" to die, leading to the formation of exact replacements for that cell. 
D) swollen ends of axons and dendrites that help the branch reach its synaptic target. 
A) the influences of neighboring cells on differentiation. 
B) attractant chemicals that guide axon growth and inhibit meiosis. 
C) death genes that are expressed when a cell "decides" to die, leading to the formation of exact replacements for that cell. 
D) swollen ends of axons and dendrites that help the branch reach its synaptic target.

Question 12

Most cases of colorblindness result from abnormal recessive genes located on the X chromosome that are not duplicated on the Y chromosome.Which of the following statements accurately predicts the outcome for the children of a father with typical genes and a mother with abnormal genes?​

Accepted Answer

A) Half of the couple's daughters, but none of their sons, are likely to be colorblind. 
B) Half of the couple's sons, but none of their daughters, are likely to be colorblind. 
C) None of the couple's children are likely to be colorblind. 
D) All of the couple's children are likely to be colorblind. 
A) Half of the couple's daughters, but none of their sons, are likely to be colorblind. 
B) Half of the couple's sons, but none of their daughters, are likely to be colorblind. 
C) None of the couple's children are likely to be colorblind. 
D) All of the couple's children are likely to be colorblind.

Question 13

If a child is born with higher than normal concentrations of neurotrophins,we can assume that​

Accepted Answer

A) no significant changes in brain development will occur. 
B) the child will have an unusually high IQ. 
C) the child's brain will experience greater than normal apoptosis. 
D) the child's brain will experience less than normal apoptosis. 
A) no significant changes in brain development will occur. 
B) the child will have an unusually high IQ. 
C) the child's brain will experience greater than normal apoptosis. 
D) the child's brain will experience less than normal apoptosis.

Question 14

Neurogenesis in adulthood​

Accepted Answer

A) does not appear to occur in humans. 
B) may protect the brain from the effects of stress. 
C) only occurs in telomeres, the tips at the end of chromosomes. 
D) is negative correlated with levels of physical activity. 
A) does not appear to occur in humans. 
B) may protect the brain from the effects of stress. 
C) only occurs in telomeres, the tips at the end of chromosomes. 
D) is negative correlated with levels of physical activity.

Question 15

Amber and Rachel are identical twins who were raised together,and Nicole and Kayla are identical twins who were adopted by different families at birth.Based on the findings of the Minnesota Study of Twins Raised Apart,what can we expect to see as these girls grow up?​

Accepted Answer

A) Amber and Rachel will be have more similar nonreligious social attitudes than Nicole and Kayla. 
B) Amber and Rachel will show about the same similarities in their nonreligious social attitudes as Nicole and Kayla. 
C) Amber and Rachel will show less similarity in their nonreligious social attitudes than Nicole and Kayla. 
D) None of the twins will share any substantial similarities in nonreligious social attitudes with her twin. 
A) Amber and Rachel will be have more similar nonreligious social attitudes than Nicole and Kayla. 
B) Amber and Rachel will show about the same similarities in their nonreligious social attitudes as Nicole and Kayla. 
C) Amber and Rachel will show less similarity in their nonreligious social attitudes than Nicole and Kayla. 
D) None of the twins will share any substantial similarities in nonreligious social attitudes with her twin.

Question 16

The Minnesota Study of Twins Raised Apart found support for which of the following conclusions?​

Accepted Answer

A) Identical twins are very similar to each other on a number of traits, regardless of whether the correlation for any particular trait was high or low. 
B) Identical twins raised together are very similar to each other on a number of traits, but identical twins raised apart are not. 
C) Identical twins are very similar on traits that are highly correlated, like fingerprint ridges, but not similar to each other on traits that are not highly correlated, like nonreligious social attitudes. 
D) Identical twins are no more similar to each other on highly correlated traits than fraternal twins and non-twin siblings. 
A) Identical twins are very similar to each other on a number of traits, regardless of whether the correlation for any particular trait was high or low. 
B) Identical twins raised together are very similar to each other on a number of traits, but identical twins raised apart are not. 
C) Identical twins are very similar on traits that are highly correlated, like fingerprint ridges, but not similar to each other on traits that are not highly correlated, like nonreligious social attitudes. 
D) Identical twins are no more similar to each other on highly correlated traits than fraternal twins and non-twin siblings.

Question 17

Myelination of the human spinal cord and brain begins about 24 weeks following conception and is complete by the age of about 18 months.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following accurately describes the attraction of bases between strands of DNA?​

Accepted Answer

A) A pairs with T, and C pairs with G 
B) A pairs with C, and T pairs with G 
C) A pairs with G, and T pairs with C 
D) A pairs with U, and T pairs with G 
A) A pairs with T, and C pairs with G 
B) A pairs with C, and T pairs with G 
C) A pairs with G, and T pairs with C 
D) A pairs with U, and T pairs with G

Question 19

At the peak of neurogenesis in humans,about how many new neural cells are produced per minute?

Accepted Answer

A) 10,000 
B) 75,000 
C) 250,000 
D) 500,000 
A) 10,000 
B) 75,000 
C) 250,000 
D) 500,000

Question 20

A group of three bases that provides instructions for the production of a single amino acid is known as a​

Accepted Answer

A) proteome. 
B) tripheme. 
C) ribosome. 
D) codon. 
A) proteome. 
B) tripheme. 
C) ribosome. 
D) codon.

Fragile-X syndrome usually occurs as a result of

In humans,myelination is not complete until

What is spina bifida?

Compared with non-twin siblings,fraternal twins

Calico cats with two sex chromosomes

Because the heritability of height is 81 percent,and the heritability of adult body mass index (BMI)is 59 percent,we can conclude that genetics play a stronger role in the development of height than BMI

During the development of your four-year-old nephew's brain,a number of neurons died and many synapses were pruned.As a result,when he is older,he will

The process in which chromosomes exchange equivalent sections of genetic material is known as

Synaptic pruning

The leading known nongenetic cause of intellectual disability is

Growth cones are defined as

Most cases of colorblindness result from abnormal recessive genes located on the X chromosome that are not duplicated on the Y chromosome.Which of the following statements accurately predicts the outcome for the children of a father with typical genes and a mother with abnormal genes?

If a child is born with higher than normal concentrations of neurotrophins,we can assume that

Neurogenesis in adulthood

Amber and Rachel are identical twins who were raised together,and Nicole and Kayla are identical twins who were adopted by different families at birth.Based on the findings of the Minnesota Study of Twins Raised Apart,what can we expect to see as these girls grow up?

The Minnesota Study of Twins Raised Apart found support for which of the following conclusions?

Myelination of the human spinal cord and brain begins about 24 weeks following conception and is complete by the age of about 18 months.

Which of the following accurately describes the attraction of bases between strands of DNA?

At the peak of neurogenesis in humans,about how many new neural cells are produced per minute?

A group of three bases that provides instructions for the production of a single amino acid is known as a

What Is Behavioral Neuroscience

Functional Neuroanatomy and the Evolution of the Nervous System

Neurophysiology: the Structure and Functions of the Cells of the Nervous System

Psychopharmacology

Vision

Nonvisual Sensation and Perception

Movement

Homeostasis and Motivation

Sexual Behavior

Sleep and Waking

Learning and Memory

Hemispheric Asymmetry, language, and Intelligence

Emotion, reward, aggression, and Stress

Neuropsychology

Psychopathology

Filters

Exam 5: Genetics and the Development of the Human Brain

Fragile-X syndrome usually occurs as a result of​

In humans,myelination is not complete until

What is spina bifida?​

Compared with non-twin siblings,fraternal twins​

Calico cats with two sex chromosomes​

Because the heritability of height is 81 percent,and the heritability of adult body mass index (BMI)is 59 percent,we can conclude that genetics play a stronger role in the development of height than BMI

During the development of your four-year-old nephew's brain,a number of neurons died and many synapses were pruned.As a result,when he is older,he will​

The process in which chromosomes exchange equivalent sections of genetic material is known as​

Synaptic pruning​

The leading known nongenetic cause of intellectual disability is​

Growth cones are defined as

Most cases of colorblindness result from abnormal recessive genes located on the X chromosome that are not duplicated on the Y chromosome.Which of the following statements accurately predicts the outcome for the children of a father with typical genes and a mother with abnormal genes?​

If a child is born with higher than normal concentrations of neurotrophins,we can assume that​

Neurogenesis in adulthood​

Amber and Rachel are identical twins who were raised together,and Nicole and Kayla are identical twins who were adopted by different families at birth.Based on the findings of the Minnesota Study of Twins Raised Apart,what can we expect to see as these girls grow up?​

The Minnesota Study of Twins Raised Apart found support for which of the following conclusions?​

Myelination of the human spinal cord and brain begins about 24 weeks following conception and is complete by the age of about 18 months.

Which of the following accurately describes the attraction of bases between strands of DNA?​

At the peak of neurogenesis in humans,about how many new neural cells are produced per minute?

A group of three bases that provides instructions for the production of a single amino acid is known as a​

What Is Behavioral Neuroscience

Functional Neuroanatomy and the Evolution of the Nervous System

Neurophysiology: the Structure and Functions of the Cells of the Nervous System

Psychopharmacology

Vision

Nonvisual Sensation and Perception

Movement

Homeostasis and Motivation

Sexual Behavior

Sleep and Waking

Learning and Memory

Hemispheric Asymmetry, language, and Intelligence

Emotion, reward, aggression, and Stress

Neuropsychology

Psychopathology

Filters

Fragile-X syndrome usually occurs as a result of

What is spina bifida?

Compared with non-twin siblings,fraternal twins

Calico cats with two sex chromosomes

During the development of your four-year-old nephew's brain,a number of neurons died and many synapses were pruned.As a result,when he is older,he will

The process in which chromosomes exchange equivalent sections of genetic material is known as

Synaptic pruning

The leading known nongenetic cause of intellectual disability is

Most cases of colorblindness result from abnormal recessive genes located on the X chromosome that are not duplicated on the Y chromosome.Which of the following statements accurately predicts the outcome for the children of a father with typical genes and a mother with abnormal genes?

If a child is born with higher than normal concentrations of neurotrophins,we can assume that

Neurogenesis in adulthood

Amber and Rachel are identical twins who were raised together,and Nicole and Kayla are identical twins who were adopted by different families at birth.Based on the findings of the Minnesota Study of Twins Raised Apart,what can we expect to see as these girls grow up?

The Minnesota Study of Twins Raised Apart found support for which of the following conclusions?

Which of the following accurately describes the attraction of bases between strands of DNA?

A group of three bases that provides instructions for the production of a single amino acid is known as a