Evolution: Natural Selection and Phenotypes. Big Idea 1: Process of evolution drives the diversity of life. Essential Knowledge. 1A1: Natural selection is a major mechanism of evolution. 1A2: Natural selection acts on phenotypic variations.
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Big Idea 1: Process of evolution drives the diversity of life
What’s wrong with this picture though???
Physical features and Behaviors
1) Stabilizing Selection: Selective pressures select against the 2 extremes of a trait.
2) Directional selection: 1extreme of the trait experiences selection against it.
3) Disruptive selection: Selection pressures act against individuals in middle of 2 extremes of the trait.
What is Going to Happen to this Small Population, thanks to Genetic Drift?
Global warming and earlier flowering time