Which of the following groups of children is most likely to have the most similar IQ scores?
A) identical twins reared apart
B) same-sex fraternal twins
C) siblings reared together
D) identical twins reared together
E) opposite-sex fraternal twins

Question

Quizplus · Accepted Answer

Identical twins have the same genetic makeup, meaning they share 100% of their DNA. When they are reared apart, any differences in IQ scores can be attributed to environmental factors. However, when identical twins are reared together, their shared genetics and environment create a high degree of similarity in IQ scores.

Which of the Following Groups of Children Is Most Likely