Answer:
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.
