Amber and Lisa are identical twins.They were separated at birth and raised to adulthood in completely different families without contact with one another.Greg and James are fraternal twins separated at birth and raised to adulthood in completely different families without contact with one another.Based only on this information,you would expect the difference in adult IQ scores between Lisa and Amber to be ____the difference between Greg and James.
A) greater than
B) similar to
C) less than
D) identical to

Question

Quizplus · Accepted Answer

The difference between Lisa and Amber's IQ scores is likely to be less than the difference between Greg and James' scores because Lisa and Amber are identical twins, meaning they have identical DNA. Therefore, any differences in their IQ scores would likely be due to environmental factors, such as their upbringing. On the other hand, Greg and James are fraternal twins and share only about 50% of their DNA, so differences in their IQ scores could be due to both genetic and environmental factors.

Amber and Lisa Are Identical Twins