1. Week 13 Vocab Definitions

2. Speciation
Occurs when members of similar populations can no longer interbreed
Disruptive selection
Individuals at the ends of the curve have higher fitness than those in the middle. If the selective pressure is strong enough and lasts long enough, two distinct phenotypes can result.
Stabilizing selection
When an ind. at the middle of the curve has higher fitness, causing the curve to narrow. Favors the average.

3. Directional selection
When an ind. at one end of the curve has higher fitness than an ind. in the middle or other end of the curve. This causes the entire curve to move towards one extreme.
Geographical isolation
Occurs whenever a physical barrier divides a population. (can cause speciation)
Mimicry
An organisms ability to look or act like another organism

4. Cladogram
A tree-like diagram that shows evolutionary relationships
Classification
Grouping of objects or information based on similarities

5. Taxonomy
The practice and science of classification
Binomial Nomenclature
The formal system of naming an organism using the genus and species name