Quinn 1 - B1MO3 Jan 6/2010 Form and Function Introduction...

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B1MO3 Jan. 6/2010 Form and Function Introduction Skulls DNA Evolution and Natural Selection Organic Evolution (macro and micro) Macroevolution Slide of gallardia moth -- Evolution Evolution is the common theme of biology. Structure and function Ragweed and goldenrod. – Spurious Correlation (draw icecream consumption versus drownings)
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Slide. Mistaken blame on Goldenrod for hay fever is due to a spurious correlation with hay fever season Monthly Drownings Monthly Average Ice Cream Consumption Canadian Beaches X X X X X X X X X X X X Skimmers and terns (set up terns with slides—go over foraging and then show skull; then show colonial skimmers and address foraging with skull as the structure) One way to look at life is that life is DNA’s way of making more DNA. I would argue that the basis for life as we know it is 5 hydrogen bonds A—T and C---G Common theme in living organisms (also shared with viruses) Then Figure 15.5 structure of the double helix – structure and function of molecules
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Covalent bonds (STRONG) maintain sequence structure (sequence describes how to build polypeptides (proteins); Hydrogen bonds (WEAK) allow double strands to separate allowing DNA replication so that all cells in same organism carry same message (mostly) and so that DNA can be passed on to offspring.
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Note: Copying of DNA is almost, but not quite, perfect – MUTATIONS occur! Organic Evolution : Any genetic and resulting phenotypic change in organisms from generation to generation. Macro-evolution – “Descent with Modification” Origin and change of taxonomic groups higher than species level. PP show ape phylogeny
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This note was uploaded on 03/01/2011 for the course BIOLOGY 1M03 taught by Professor Kijuira during the Spring '08 term at McMaster University.

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Quinn 1 - B1MO3 Jan 6/2010 Form and Function Introduction...

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