Answer:
The answer is - Behavioral geneticist; Molecular psychologist
Step-by-step explanation:
A behavioral geneticist is someone who studies the influence of genetics and environment of behaviors. They use genetic methods to carry out researches on the nature of individual differences in behavior and how it originates.
A molecular psychologist is one who uses the tools of molecular biology to study behavior and how it relates to the the brain structure and system. Molecular psychology has roots in behavioral genetics.