Unit 8 Reflection

This unit was mainly about speciation. Isolation is necessary for speciation to occur. The three factors that contribute to speciation are behavioral isolation, geographic isolation, and temporal isolation. Behavioral isolation is where there are changes in mating behavior. Geographic isolation is where a physical feature separates a species into groups. Lastly, temporal isolation is where reproduction is prevented because of the timing. 

https://upload.wikimedia.org/wikipedia/commons/thumb/f/f3/Mutation_and_selection_diagram.svg/2000px-Mutation_and_selection_diagram.svg.png

This unit also taught about Darwin's conclusions. Darwin's first conclusion is that there are winners and losers in the natural world. His second conclusion is that due to natural selection, populations usually end up looking like the winners. An essential theme for this unit is that natural selection causes evolution. I want to learn more bout birds and why some have very colorful feathers, such as parrots, while others have bland colors, such as crows. In an attempt to be more assertive, I have been trying to sit up straighter and make more eye contact. My goal is to very assertive by June.

Below are Darwin's finches.

https://upload.wikimedia.org/wikipedia/commons/a/ae/Darwin%27s_finches_by_Gould.jpg