Buck and Sean join Vincent in New York, while Sylvia is with Nels in Salt Lake City to discuss the first mutant ant ever made: disruption of orco, a gene required for function of odorant receptors, causes defects in social behavior and fitness.

Nels and Vincent speak with Jim Bull about the results of genetic models which suggest that the evolution of inbreeding in response to lethal gene drive might make population control difficult to achieve.