BIOLOGY 1M03 Chapter Notes -Allele Frequency, Special Creation, Rifampicin
24 Sep 2014
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Document Summary
Key concepts: populations and species evolve, meaning that their characteristics change through time, evolution may be defined as changes in allele frequencies over time, exceptions exists, more than merely changes in allele frequencies, evolution by natural selection occurs when individuals with particular alleles survive or produce the most offspring in a population, adaptation at the micro evolutionary scale is a genetically based trait that increases an individual"s ability to survive and produce offspring in a particular environment, evolution by natural selection is not progressive. It doesn"t change the characteristic of an individual it changes the characteristics of a population: animals do not do things for the good of the species (but might behave altruistically under particular conditions), and not all traits are adaptive, all adaptations are constrained by trade offs as well as genetic and historic factors, scientific theories are often made from an observation about a natural pattern and a proposed process that supports it.
