Homologous Traits
Beaver and Elephant
The beaver and the elephant are two different species that possess the homologous trait. The beaver is actually one of the largest rodents in North America. The beaver has webbed hind feet and a large, flat, nearly hairless tail that they use for balancing when gnawing on trees. They weigh over 60 pounds and grow to be about four feet long. The beaver is made to live in the water. The elephant on the other hand is the largest land-dwelling mammals on earth. They grow to a height of 5-14 ft. tall at the shoulders and can weigh up to 15,000 lbs. They have very thick skin that keeps them cool, are brown to dark gray in color, and have long, coarse hairs sparsely covering their bodies. Common ancestor of these two species is the Mammalia because they both have teeth structures.
Barnacles and Limpets
Barnacles are exclusively marine, and they tend to live in shallow and tidal waters, typically in erosive settings. Limpets are freshwater and saltwater snails. They both have an outer shell, but the inside if where they are different. The barnacles have jointed legs while the limpet has a foot. The analogous trait would be the shell that is independent. The similarities of these traits that are used to protect themselves from predators.The common ancestor was the bilateria that did not possess this trait because they were worm like.
BARNACLE LIMPET
I found that the beaver and the elephant having a homologous trait was very interesting do to the fact that they look completely opposite from each other.
ReplyDeleteGood job on the barnacles and limpets for the analogous structure.
ReplyDeleteRE: The homologus structure... What structure does the beaver and the elephant share that is homologus? You never specify what they have in common that you are comparing.