A class of toxins found in snake and mammalian venom share a common evolutionary ancestor. This was despite animals with venomous bites such as some snakes and lizards and a few mammals belonging to vastly different branches of the evolutionary tree that split more than 300 million years ago. A Scientific study shows that all the enzyme’s genes in reptiles, amphibians, fishes, and mammals to create an evolutionary tree, and found that kallikrein serine proteases and mammal salivary kallikreins did evolve from the same ancestral gene. Do you think that reptiles all that are “venomous” to some degree?
