Dr. Shulter is studying the family members of individuals with schizophrenia, looking for characteristics that occur in individuals with schizophrenia and, in milder forms, in family members who do not have schizophrenia. What is Dr. Shulter doing? A. Conducting twin studies B. Identifying and studying endophenotypes C. Conducting adoption studies D. Identifying and studying the interaction between genes and the environment

B. Identifying and studying endophenotypes

Explanation:

Endophenotype: The term "endophenotype" is described as one of the different genetic epidemiologies that is being utilized to distinguish different behavioral symptoms into a stable "phenotypes" possessing a clear and meaningful "genetic connection". The concept of endophenotype was proposed by Kenneth R. Lewis and Bernard John in 1966 paper.

The concept of endophenotype has been widely used in the study of schizophrenia as it describes both the brain dysfunction and underlying cause of an individual's behavior.

In the question above, the correct answer is B.

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