Essay
MZ (monozygotic)twins are genetically identical; DZ (dizygotic)twins share about 50% of their genes with each other.A study of 2,685 twin pairs showed that female MZ twins are six times more likely than DZ twins to have a high concordance for alcoholism.All of the twin pairs were raised together.What does this finding suggest about genetic and environmental components for alcoholism? Explain your answer.
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