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Definition
• The idea that the attributes of life change over time
• Darwin and Lamarck
• Interaction of environment with natural variation in a species is very important
• The organisms (and therefore species) that can reproduce the best survive |
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Definition
• First to postulate theory of evolution, 1809
• Believed that acquired characteristics of an organism were passed down to offspring eventual change over time
• Wrong! |
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Definition
• Credited with modern theory of evolution
• Went with HMS Beagle and observed stuff, notably birds in the Galapagos
• Life came from one ancestor many different species, not all survive |
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Definition
• Fundamental mechanism of Darwin’s evolution
• Competition, variation, selection and reproduction, adaptation |
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Definition
| • A natural environmental limit on an organism’s ability to survive and reproduce competition |
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Term
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Definition
• Similarity in the characteristics of species resulting from common ancestry
• Evidence for evolution
• e.g. wings of bat and cat’s paw; whale’s fin and human’s hand
• Scientists can use this to determine how closely related species are |
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Term
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Definition
• Evidence for evolution
• AIDS medication
• Penicillin is much less effective than it used to be |
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Term
| Universal Makeup of Organisms |
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Definition
• Evidence for evolution
• All organisms use DNA, RNA, proteins
• Same codons and similar amino acid sequences for proteins |
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Term
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Definition
• Similar structures evolve to perform the same function in extremely different species
• e.g. needles in cacti and quills in porcupines |
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Definition
• Evidence for evolution
• Shows that there used to be species which are now extinct |
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