What is evolution explain the evidences putforth in support of evolution?
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Answer:
Evolution (which Darwin referred to as “descent with modification”) is a multi-faceted affair, but the core mechanism proposed, known as natural selection, stands true to this day. It claimed four simple but powerful statements supported by decades of accumulated evidence:
Variation in traits (or characteristics) within a species exists.
These traits are heritable.
Some traits result in individuals having more offspring (or are associated with it).
These traits will increase within a population over time.
As such, natural selection is all about reproduction. Although Darwin was unaware of how variation come into existence (genetics was still some way off), it was only necessary for the variation to exist and for it to be heritable.
There are of course some notable exceptions to the above. As an example, a volcanic eruption, or meteor strike, can destroy an entire group of variants independent of their competitive ability or reproductive success (by chance). This is known as genetic drift, and it’s also an important mechanism that drives evolution.
Explanation:
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