We’ve learned that the relationship determines the resemblance: is it fair to expect a couple blue-eyed blondes have the same blonde kid with eyes of heavenly color. However, the nature of the known and far more intricate family ties. Quite often, ties of blood unite the species, do not resemble each other neither in outward appearance nor the way of life. Introducing animals that you would never have thought that they were siblings.

Already for anybody not a secret that whales and dolphins, although looks very similar to fish, are mammals. They breathe air, feed their young milk, and their tails are fused hind limbs. It is not surprising that scientists have searched for the ancestors of cetaceans among land animals. For a long time it was believed that their ancestors were mezonigie is curious of the extinct mammals that unites the signs of carnivores (eat meat) and ungulates (instead of feet had hooves). However, recently it was revealed that the closest relatives of whales and dolphins are hippos the representatives of the group of ungulates that includes pigs, camels, giraffes and deer. As shown by genetic analysis that whales and hippos there is a common ancestor that lived 50-60 million years ago. The degree rodstvenikam great that it was even proposed to create a common squad cytopathicity.

As you know, “born to crawl — can not fly”. But for nature there are no rules. Albatrosses and petrels — the true kings of the sky. Continue reading →