You mention in the book that it has led to evolutionary hypotheses about jealousy, for example. (scientificamerican.com)
«New study refutes how fruit flies developed their tolerance for alcohol: Experiments use transgenic organisms and biochemistry to test evolutionary hypothesis based on gene sequencing.» (sciencedaily.com)
By providing an alternative to DNA, osteocalcin could expand the range of specimens that can be used to test evolutionary hypotheses, he says. (sciencemag.org)