Twin and Adoption Studies Have Proven to Play a Valuable

Multiple Choice

Twin and adoption studies have proven to play a valuable role in research for which of the following reasons?

A) Selective breeding experiments that could provide answers about the role of nature and nurture are considered unethical for human beings.
B) Selective breeding experiments that could provide answers about the role of nature and nurture are considered ethical for human beings.
C) Such studies are helpful in gaining knowledge about population control.
D) Such studies will assist scientists in perfecting the science of cloning.