Evolution Theory

by Grogaard
Last updated 6 years ago

Discipline:
Vocational & Technology
Subject:
Electronics
Grade:
7

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Evolution Theory

Evolution theory

Every person falls under a “Big Tree.” the big tree consist of “Branches” of different species. Branches all connect a one center tree branches can be big or small and have known and unknown animals/ or extinct or not extinct

Natural selection acts to make minor advantages genetic mutations. Suppose a member of a species developed a functional advantage. It would produce animals with that advantage and pass it on. The disadvantaged members of the same species would gradually die out, leaving only the superior advantaged members of the species.

Charles Darwin invented this theory (1859)

Coevolution is the joint change of two or more species in close interaction. Divergent evolution is the process of two or more related species becoming more and more dissimilar.

Today we use the term adaptive radiation to refer to this sort of branching evolution in which different populations of a species become reproductively isolated from each other by adapting to different ecological niches and eventually become separate species.

Suppose, salamanders had a hard time walking because their short legs. These salamanders begin to slither on their bellies to move from place to place. Because they didn't use their legs, the leg muscles wasted away from disuse and the legs thus became small. Lamarck's theory said that the salamanders passed this acquired trait to their offspring. In time the salamander's legs were used so rarely that they disappeared.


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