A 15 percent concordance rate in MZ twins, with a 8 percent rate in same-sex DZ twins, indicates that genes play a major role in a trait.

Name: A 15 percent concordance rate in MZ twins, with a 8 percent rate in same-sex DZ twins, indicates that genes play a major role in a trait.
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Quizplus · Accepted Answer

The concordance rate difference between MZ and DZ twins is not large enough to suggest a major genetic influence, as environmental factors could also contribute significantly.

A 15 Percent Concordance Rate in MZ Twins, with a 8