Biology 8

Biology 8 - Evolution- thought of by greeks about 300 b.c....

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Biology 8/24 1 st trip to pond: 55 frogs caught and banded 2 nd trip to pond: 72 frogs caught, 12 already banded total number of frogs: 115 why does the water rise in the jar and not in the pan? Fire heated the air and expanded in the jar, which created a vacuum making the water rise. Vitalism: processes of life one not explainable by laws of physics and chemistry. Spontaneous generation: Life only comes from life Creation of life: happened about 3 billion years ago, and only happened ONE TIME. Reproducing=the continuation of life Classical criteria for life: 1. cells 2. photo plasm 3. growth 4. reproduction 5. contain metabolic enzymes 6. cellular respiration 7. reaction to stimuli control Charles Darwin:
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Unformatted text preview: Evolution- thought of by greeks about 300 b.c. Origin of species (~1859) the major concept: 1. common decent 2. natural selection Alfred Russell Wallace Natural selection: 1. variation- no two individuals are alike 2. over reproduction- too many offspring (fish) 3. differential survival- good variation, more likely to survive and reproduce two types: gradual, abrupt phylogeny-evolutionary history phylogenetic tree (chladogram) ^ can predict from it, makes classification science. Chlade=branch Bacteria Archaea Eukarya: protists, plantae, fungi (absorption), animalia (ingestion) Monera=prokaryotic cells (no nucleus)...
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This note was uploaded on 04/15/2008 for the course BIO 1305 taught by Professor Eldridge during the Spring '08 term at Baylor.

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Biology 8 - Evolution- thought of by greeks about 300 b.c....

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