Donald and ronald are identical twins who have been raised apart, in separate adoptive homes. however, both brothers have developed the same psychological disorder. this information could be used as evidence to suggest that
a. environmental factors have more influence than genetic factors in this disorder.
b. both genetic and environmental factors contribute equally to this disorder.
c. genetic factors have more influence than environmental factors in this disorder.
d. neither genetic nor environmental factors contribute to this disorder.

Option C: In this disorder genetic factors have more influence than the environmental factors.

Explanation:

Twin research and study is seen as a key tool in behavioral genetics and from psychology to biology. This study explains about the importance of genetic and environmental influences on traits and disorders. Twin study is conducted on Fraternal and Identical twins.

Identical twins share almost hundred percent of their genes, whereas, Fraternal twins shares only fifty percent of their genes which is similar to any other siblings, that's why according to me in this disorder of identical twins genetic factors will have more influence than environmental factors.

answer; (regions)

c. 4, 3, 1 ,2. is correct

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