Homologous vs Analogous Evolution

I received this video in my inbox his morning from Jerry Coyne’s Why Evolution is True blog. It’s a quick two-minute video outlining how convergent evolution has resulted in extraordinarily similar features appearing in species long after their phylogenetic divergence. In other words, these adaptations are actually analogous, NOT homologous.

The original video appears on phdcomics, where you can find a treasure trove of lab-related humor.