Multiple Choice
What has research on twins revealed concerning a possible genetic etiology for autistic disorder?
A) High MZ concordance rates suggest a strong role for genetic factors.
B) Similar concordance rates for MZ and DZ twins point to the significant role of the environment.
C) Concordance rates have been low and inconsistent,suggesting little,if any,role for genetic factors.
D) Analysis of the concordance rates suggests that a predisposition to dementia is the primary etiological factor.
Correct Answer:
Verified
Correct Answer:
Verified
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