Monday, February 9, 2009

Introduction to Evolution


Evolution is a theory used in biology to describe the change in traits that are passed down from generation to generation in different organisms. Evolutionist believe changes over time are caused by three main processes: variation, reproduction and selection. The one major idea that drives the belief of evolution is natural selection.

Natural selection is the idea that heritable traits that contribute to the survival of species will become more common in a population and thus more likely to be passed along to future generations.

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1 comment:

  1. mwardlowFebruary 12, 2009 at 6:45 AM

    Gosh Holls! You sound so matter of fact and smart! :)

    I have tried to be all "funny" in my blogs/comments, and here you are all serious... Great information and pictures though! Maybe I'll take a clue from yours and start being a little more informative with my blog content.

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