The likelihood that a child born to two schizophrenic parents ...

[bobbie]

The likelihood that a child born to two schizophrenic parents will become schizophrenic is less than 50 percent. This suggests that
 
  A) schizophrenia is not produced by a single gene.
  B) schizophrenic parents rarely marry.
  C) schizophrenia is a metabolic disorder.
  D) schizophrenia is produced by a single dominant gene.
  E) schizophrenia is associated with infertility.

Question 2

All of the following statements about the genetic basis of schizophrenia are true EXCEPT that
 
  A) adoption studies indicate a biological basis for schizophrenia.
  B) the concordance rate for schizophrenia is higher for monozygotic than for dizygotic twins.
  C) a person with a schizophrenia gene will always develop schizophrenia.
  D) several genes may be involved in schizophrenia.
  E) genes impart a susceptibility to develop schizophrenia.

[lkoler]

Answer to Question 1

Answer: A
Rationale: The likelihood that a child born to two schizophrenic parents will become schizophrenic is less than 50 percent. This suggests that schizophrenia is not produced by a single gene.

Answer to Question 2

Answer: C

[bobbie]

Excellent

[dreamfighter72]

TYSM