Researchers using genetic mapping techniques have had the MOST difficulty identifying the genes responsible for

a. muscular dystrophy.
b. intelligence.
c. height.
d. cystic fibrosis.

B

Psychology

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Adoption studies are important in behavior genetics because they help to

A. investigate the effects of adoption. B. provide evidence on genetic versus environmental contributions. C. separate the MZ twins from the DZ twins. D. determine whether adoption can influence genetic makeup.

Psychology

The hormones which stimulate the growth of ovaries in girls and testes in boys are

the __________ . Fill in the blanks with correct word

Psychology