Dr. Dubois conducts twin and family studies in different cultures to explore how environmental factors influence the expression of genetic tendencies toward alcohol use disorder. Recall your textbook's discussion of nature and nurture in Chapter 1. Dr. Dubois specializes in an emerging field called:

Dr. Dubois specializes in an emerging field called epigenetics.

Explanation:

Epigenetics can be described as the field of biology in which heritable phenotypes are studied which are not influenced by the changes in the genotype. In the field of epigenetics, the modification of gene expression is studied rather than the modifications of the genetic code. As Dr. Dubois is testing for the influence of certain environmental factors on the gene expression rather than the gene code, hence, we can say that he specializes in the field of epigenetics.

this question does't support enough resioning to answer.

i believe your answer is mountains.