Evolution Exam Review Evolution Natural Selection Natural selection

Evolution Exam Review!

Evolution & Natural Selection Natural selection shows us that evolution occurs within a species over time. Individual organisms do not evolve—species change over time due to favorable traits being passed down. Organisms that have traits making them more likely to survive in a specific environment are the ones that will be able to reproduce and pass their genes/traits down to their offspring. Organisms that do not have favorable traits will likely not survive to reproduce and pass those traits down.

Evidences for Evolution Be familiar with the 9 evidences for evolution discussed in your packet on pages 4 -8. Be sure to recognize that morphology includes both homologous structures as well as vestigial structures (know what each of these mean and be able to give/recognize an example of each).

Factors of Evolution Know the 4 factors that influence evolution and know how they relate to natural selection (this was in your notes).

Allele Frequency Understand the concept of allele frequency, and be able to give the frequency of an allele in a given generation when a data table is provided. Know the different types of graphs showing how allele frequencies can change in a population over time. Be able to identify a graph of each and know when they may occur. Directional Selection Stabilizing Selection Disruptive Selection