Luciana and Mariana are identical twin sisters raised apart. Jafari and Khamisi are brothers born 2 years apart but raised together. Based on adoption and twin studies, what can we expect to be TRUE?

Question

Quizplus · Accepted Answer

Adoption and twin studies often show that identical twins, like Luciana and Mariana, have higher correlations in traits such as BMI, even when raised apart, due to their genetic similarities. This is in contrast to siblings like Jafari and Khamisi, who, despite being raised in the same environment, have less genetic similarity and thus typically show lower correlations in such traits.

Luciana and Mariana Are Identical Twin Sisters Raised Apart