Wild Connection: What Animal Courtship and Mating Tell Us about Human Relationships Paperback – June 3, 2014
Reported as: Are Humans Any Good at Pheromones? By Jennifer L. Verdolin
Excerpt: “…almost all of the genes involved in protein expression of a functional vomeronasal organ are pseudogenes in humans dating back as far as 23 million years ago— around the time we went our separate ways from Old World monkeys. What are pseudogenes? They are dysfunctional copies or relatives of functional genes. Put simply, they don’t work.”
My comment: The experience-dependent de novo Creation of olfactory receptor genes links the epigenetic landscape to the physical landscape of DNA via receptor-mediated changes in hormones that affect behavior in insects and mammals. Genes that are Created but no-longer needed may gradually accumulate mutations and become pseudogenes. Thus, the de novo Creation of olfactory receptor genes links ecological variation to ecological adaptations and pseudogenes exemplify past adaptations.