DrRitter Is a Geneticist

Dr.Ritter is a geneticist.He is conducting research to identify the "happy" gene; in other words,a single gene that determines our happiness.What advice might you give him?

A) With the use of molecular studies,he should be able to identify the gene responsible for happiness.
B) If he relies heavily on twin studies,especially twins reared apart,he should be successful in identifying the "happy" gene.
C) Understand that most personality traits are determined by multiple factors,and therefore isolating a single gene related to happiness is unlikely.
D) If he is willing to combine molecular genetics with the newest brain imaging techniques,he should be able to isolate the "happy" gene.