homologous

Homologous


The beaver and the elephant are two different species that possess the homologous trait. Did you know that the beaver is actually one of the largest rodents in America. The beaver uses its flat hairless tail for balancing which I thought was pretty interesting. The beavers main habitat is the water and they can actually grow to be four feet long. Some can way anywhere from 40 to 60 lbs!

Now the elephant is one of the largest mammals on earth. The elephant's shoulder  can actually weigh over 16,000lbs. They can also grow to be 5 foot thirteen inches, which I know doesn't seem very tall but with that kind of weight, it can kill you. They have thick skin almost a coarse like feel, which helps them keep cool during the summer. They have long tusks and hair very think covering their bodies. A common ancestory for both is Mammalia because they both have teeth structures .






Analogous

The snail and the turtle are two species that possess the analogous trait. Both of these species  have an outer shell which they use as protection from their predators. If you have every picked up a snail or approached it, when you get to close they hide back in their shell. Same thing with a turtle, when they are scared they hide in their shell and this is for protection. Turtles and snails have no common ancestor and so they evolved independently of one another from different methods/structures.