Perhaps the most controversial principle of biology, this is due to many reasons ranging from the ignorance of the population to religious beliefs. I have chosen this principle as I wish to portray an unbiased look at this bold claim made by scientists where I present the facts in a scientific manner. So is there really any evidence that claim is true? Of course, we cannot tackle the entire tree of life at once, so instead, we’ll focus most of our attention on one small but fascinating branch of the evolutionary tree: Cetaceans. This branch includes whales and dolphins
Body
According to Biologists, Cetaceans have evolved from an ancient four-legged land mammal. Anatomically, whales have bones needed for a fully developed arm, hand,