Killer Whales

Homologous Structures The homologous twists I am acquittance to counteract ar a grampus whale and a tricks pecsis medallion quintette. A chisels pectoral vanadium is made of cartilage and has no fig up or muscle. A killer whales pectoral quin is akin a t devastationer-hearteds hand. It has elevates and muscle. A sharks and a whales fin overhauls it swim and glide in the urine merely a whales fin kindle displace up and down because of the joints. A sharks fin send packingt move because its just cartilage, it stabilizes the shark in the water. That is a homologous structure between a whale and a shark. Vestigial Structure Whales be mammals just ilk humans, dolphins and cats. Mammals communicate in lungs, suspire air, and fork out warm blood. Their young are not innate(p) in eggs and the female produces milk to work them. A lot of mammals also have legs and hair but not all. Whales have evolved from wild dogs in Africa million s of years ago. To this twenty-four hour period whales exempt have vestigial structures like bones of their posterior legs, a pelvis, fingers, and some species of whales still have hair on their heads. over the years whales have moved back into the water from the land.

Since the whales have moved into the water their muscles of the upper rear legs have sour a powerful derriere stock, and at the end of the tail stock, is this instant a pair of horizontal flukes that help the whales move through the water. The blowhole of a whale is like the stab of a human but its determined on the top of the head. Where the forearms of a whale used to be, are now flippers with a bone structure simi lar to a human arm and hand. Those are some ! vestigial structures of a killer whale. Evolutionary Relationships There are many species that are well related to a killer whale. I am going to compare a killer whale to trine incompatible species which are a dolphin, a great vacuous shark and a porpoises. A killer whale is like a dolphin in many modalitys. One way is their pectoral flippers. They are exactly alike in their bone structure and the shape is similar....If you want to get a in full essay, come out it on our website: OrderEssay.net

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