We are interested in investigating a diverse set of questions in anthropology and evolutionary biology using genomic tools.
Our current focus is studying the impact of genomic structural variation to human evolution. Genomic structural variants (SVs) involve differences in copy number (i.e., deletions and duplications), orientation (i.e., inversions) or genomic location (i.e., translocations) of large segments of DNA between individuals. Recent studies have demonstrated that SVs constitute a greater portion of the human genomic variation as compared to single nucleotide variants, and play an important role in human disease and evolution (For instance see this paper ). We believe that SVs represent a huge and unexplored area of evolutionary genomics that is ripe for studies focusing on their impact to human disease and biology. Within this framework, we are currently working on several specific questions:
(ii) Identifying and scrutinizing adaptive structural variants that contribute to species-specific phenotypes. Representative papers: Iskow, Gokcumen and Lee 2012, Gokcumen et al. 2013, Xu et al. 2016.
(iii) Explaining the evolutionary processes that maintain ancient variation (particularly deletion polymorphisms) in contemporary human populations. (e.g., Lin et al. 2015).
(iv) Local adaptation and impact of culture to genetic variants, especially those that involve skin and saliva. The results of some our previous studies emphasized the value of ethnohistorically contextualized sampling with genome-wide analysis to obtain a more complex understanding of the study populations. Muthukrishnan and Gokcumen, 2015 and Muthukrishnan et al. 2016