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Numerous Twin Studies Have Confirmed a Genetic Component to Autistic

Question 6

Multiple Choice

Numerous twin studies have confirmed a genetic component to autistic spectrum disorder.In studies comparing concordance rates in MZ and DZ twins,Folstein & Rutter (1977) found concordance in 4 out of 11 MZ twins but none in DZ twins.Subsequent twin studies have found concordance rates of between what percentages for MZ twins?


A) 40-64%
B) 15-23%
C) 70-90%
D) 60-91%

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