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Evolution: the puzzle of diversity
Evolution: the puzzle of diversity
What will earth's environment be like in the future?
In what ways will human
genes and traits evolve?
Why did Darwin interchange the terms "survival of the fittest" and "natural selection"? or why do they mean the same thing? pg. 381
How was the theory of
evolution developed? pg. 369
What is Evolution?pg. 369
Why do species all do well in their environments? pg. 380
Darwin's observations: he traveled the world in 1831
Why are there
68 species of
beetles in Brazil?
How will the environment shape
humans in the future?
What are the two main sources
of genetic variation?pg. 394
Evolution : facts ,observations, and hypotheses
Fossils: preserved remains of past organisms
Geographic distribution: animals on different continents share similarities due to ecological pressures
Change of organisms over time (millions of years)
1.
Gene shuffling
Where did these species go?
How are they related to living species?
Mutations
2.
Ecological pressures: Why are different species, similar types of animals? pg. 383
Why are there so many ways to reproduce? pg. 17
Embryology: vertebrates' embryo developments are similar, indicating a common ancestor.
Why do tortoises from different islands have different shaped shells
Homologous Body Structures: vertebrates have similar body structures
(humans)
(starfish)
Why were the little brown birds different from island to island
Why do reptiles, amphibians , and mammals have similar bone structure?
Embryology
Bird Evolution
What are the evolutionary
processes that will shape
humans in the future?
What impact do mutations
have on the evolution of
organisms? pgs 394 and 308
What percentage of your grade
is this CFA worth?
25/175 X 1/3 X 100 = 4.7 %
How does natural selection
lead to adaptation? pg. 380
How have humans adapted
to a changing earth? pg.380
Vestibular System for Balance
1. Natural Selection and adaptation
2. Speciation
3. Mutations
4. Genetic drift