Regarding genetic factors in schizophrenia, which of the following statements is false?
a. When one identical twin has schizophrenia, the other twin has a 45 to 50 chance of having the disorder. b. About 13 of people with a schizophrenic parent develop the disorder themselves.
c. The closer the genetic relationship a person shares with a schizophrenic individual, the greater the likelihood that the person will have or develop schizophrenia.
d. Investigators have identified a single gene that is responsible for creating a genetic predisposition for schizophrenia.
e. Heredity plays an important role in schizophrenia, but biological and environmental factors also play important roles.
Question 2
Which of the following examples represents the most remarkable demonstration of teaching animals to communicate?
a. Kanzi's mother, a chimp who learned to communicate through the pushing of geometric shapes on akeyboard
b. Washoe the chimp who learned to combine signs into simple phrases
c. Sarah the chimp who learned to communicate through placement of plastic chips d. A chimp named Nim Chimpsky learned to sign via operant conditioning
e. Kanzi the chimp who learned to communicate through observation and imitation of his mother
Genetic drift and population size.
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