When Investigators Try to Determine What Percentage of Various Human

Multiple Choice

When investigators try to determine what percentage of various human traits is due to nature (inheritance) and what percentage is due to nurture (the environment) , scientists often examine

A) siblings that share only one parent and were separated at birth.
B) non-identical siblings that were separated at birth.
C) identical human twins that were separated at birth.
D) adopted siblings that have been separated due to divorce.
E) unrelated children who have been adopted by the same family and grew up together.