Bechly and host Casey Luskin discuss cattle and bison, horses and donkeys, the Asian black bear and the South American spectacled bear, and more.
Even though the differences appear superficially striking, they do not involve any novel body plans (i.e., no new proteins, new tissues, or new organs).
Miller and Luskin discuss fruit flies, finch beaks, stickleback fish, mutational hotspots, phenotypic plasticity, and the gravity well model.
Cichlid and stickleback fish are two of the most iconic examples of adaption that biologists present as evidence for the plausibility of evolutionary processes.
Cichlid variation do not primarily originate from random mutations but from engineered systems.