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Exam 3: Biology and Behavior

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Question 101

Multiple Choice

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Which statement about genes is TRUE?

A) Genes that are turned off by regulator genes remain off for the remainder of the person's life.
B) Regulator genes function without input from the environment.
C) Genes belong to extensive networks of genes and do not function in isolation.
D) All of the statements are true.

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Question 102

Multiple Choice

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Which statement about human mothers' milk is NOT true?

A) It contains beneficial bacteria.
B) It contains fatty acids that have a positive effect on IQ.
C) It contains the mother's antibodies.
D) It is nutritionally superior to formula.

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Question 103

Multiple Choice

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This type of testing is genetic testing during pregnancy.

Developmental changes such as puberty, graying hair, and the reduced organ capacity that comes with age are caused in part by

Behavior geneticists believe that _____ of the behavioral traits of human beings are influenced at least to some degree by genetic factors.

Ashley is currently 5 months pregnant. When she had an ultrasound performed, her obstetrician found a suspected abnormality with her pregnancy. Today, he is taking a sample of the amniotic fluid to do further testing. What type of test is this?

Genetic influence in behavior genetics family studies is demonstrated by _____ correlations for higher degrees of _____ similarity.

An adoptive twin study is conducted to examine the role of genetics and environment on sociability. Which result would lead to a conclusion that environmental factors are important in the development of this trait?

Genetic testing during in vitro fertilization in which the fertilized eggs are tested for a specific genetic disorder is referred to as

Which statement is TRUE?

During which time is brain damage LEAST likely to lead to permanent deficiencies?

Notable differences in the degree of placenta sharing is referred to as

As environmental variability increases, heritability estimates will

How does neurogenesis occur?

Which factor plays a central role in determining which of the brain's synapses will be eliminated and which will be maintained?

Which statement does NOT describe a problem associated with the use of formula for infant feeding in underdeveloped countries?

The complete set of genes is referred to as a

The brain and nervous system are both influenced by

Which statement about the process of myelination is TRUE?

Which structures increase the speed and efficiency of electrical impulse transmission?