30-ProcessEvolution - EVOLUTIONARY BIOLOGY EVOLUTIONARY...

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Unformatted text preview: EVOLUTIONARY BIOLOGY EVOLUTIONARY BIOLOGY THE PROCESS THE PROCESS OF OF BIOLOGICAL EVOLUTION BIOLOGICAL EVOLUTION = actual evolution evels of Biological Evolution Non-Mendelian Species (Prokaryotes and Eukaryotes Without Sexual Reproduction) Mendelian Species (Sexually Reproducting Eukaryotes) DARWIN ON ADAPTATION It was equally evident that neither the action of the surrounding conditions, nor the will of the organisms [an allusion to Lamarckism], could account for the innumerable cases in which organisms of every kind are beautifully adapted to their habits of life— for instance, a woodpecker or tree-frog to climb trees, or a seed for dispersal by hooks or plumes. I had always been much struck by such adaptations, and until these could be explained it seemed to me almost useless to endeavour to prove by indirect evidence that species have been modified. — Charles Darwin in His Autobiography Batesian Mimicry in Various Insects Vespula Stinging Wasp (Model) Harmless Solitary Bee (Mimic) Harmless Flower Fly (Mimic) Harmless Beetle (Mimic) Camouflage Mimicry Leaf Mimicry by Katydids Green-Leaf Katydid Spotted-Leaf Katydid Dead-Leaf Katydid Lichen Katydid Camouflage Mimicry Branch and Thorn Mimicry by Treehoppers Thorn-Like Treehopper Brown Treehopper Mimicking Dead Branches Protective Mimicry Simulated Eyes on Thorax in Caterpillar of Pale Swallowtail Butterfly Thorax Head Crop Mimicry Weed Mimicry of Crop Seeds Weed Seeds Crop Seeds Lentil Crop Mimic MICROEVOLUTION MICROEVOLUTION EVOLUTION EVOLUTION OF OF BIOLOGICAL POPULATIONS BIOLOGICAL POPULATIONS MICROEVOLUTION A Two-Step Process (1) Variation (Random) (2) Natural Selection (Non-Random) Variation in a Caribbean Snail Variation in Snail Populations Variation in the Snail Liguus fascitus ARTIFICIAL SELECTION he Selection of Plants, Animals & Other Organisms with Certain Features Consciously by Humans for Some Particular Purpose Artificial Selection Varieties of Dogs ( Canis familiaris ) Varieties of Pigeons rtificial Selection in Brassica (Mustard) Wild Mustard ( Brassica oleracea ) NATURAL SELECTION NATURAL SELECTION DARWIN ON NATURAL SELECTION...
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This note was uploaded on 11/22/2011 for the course BIOLOGY 190a taught by Professor Staff during the Fall '11 term at UMass (Amherst).

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30-ProcessEvolution - EVOLUTIONARY BIOLOGY EVOLUTIONARY...

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