Notes

Slide Show

Outline

1	Anatomy & Physiology I - Unit 4: Evolution and Natural Selection
2	Tree of Life ~2000
3	Tree pattern suggests evolution - the hierarchy of life is a family tree in which populations change with time. - in general, similarities between species are due to relatedness.
4	Evidence for evolution
5	Evidence for Evolution: Structural Similarities
6
7	But how do species evolve? Darwin figured out how. It’s a process similar to how humans breed animals
8	Animal breeding aka “Artificial Selection”
9	How do you get this?
10	Evolution in action: Giraffe neck length
11	Happy Giraffes
12	Hungry Giraffes
13	Surviving Giraffes
14	With Evolution You Get: Taller giraffes over time
15	Evolution: A change in a population over time
16	Natural selection An environmental influence that gives some individuals in a population a reproductive or survival advantage over others. Principal cause of evolution.
17	Requirements for Evolution Variability Heritability Differential survival or reproduction
18	Tall Giraffes
19	Speciation: separation by natural events that causes new species to develop
20	Discussion Question: Are humans still evolving?
21	Common Misperception:
22	Acquired characteristics are not inherited! as in…..
23	Timmy & Gobbles
24	Evolution is slow Great Calendar
25	December
26	December 31
27	Classroom Assignment: Building the Perfect Beast - I want you to think about how the human body has evolved over time, and how it might have evolved better. - Today you are in charge of the world, and you have to think about ways to make the human species better adapted to the environment.
28	Building the Perfect Beast Pick any ten attributes or parts of the human body Note the defect of that part, or how it might be made better Describe your changes, piece by piece, oh master of the universe… Draw me a picture of your perfect beast