Don and Henley are identical twins who are being raised in different homes.Freddie and Mercury are identical twins who are being raised together.If they were all included in a study of a behavioral characteristic (such as creativity), the study would most likely be a(n):

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The study involves identical twins being raised in different environments (Don and Henley) and identical twins being raised together (Freddie and Mercury), which is a classic setup for an adoption study. Adoption studies are used to disentangle the effects of environment and genetics on behavior by comparing similarities between biological relatives raised apart and together.

Don and Henley Are Identical Twins Who Are Being Raised