BIO120H1 Lecture Notes - Lecture 8: Melanism, Probability Distribution, Stabilizing Selection
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BIO120H1 Full Course Notes
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Document Summary
Orchid from madagascar with long floral tube pollinated by night-flying moth with exceptionally long proboscis. Inferred that tube was an adaptation, nectar at base. Fitness (darwinian fitness): relative genetic contribution of individuals to next generation as a result of differences in viability and fertility. Selective advantage: some individuals are better adapted to the environment, have higher fitness. Will pass on more genes to next generation. Adaptation: two definitions: any trait that contributes to fitness by making an organism better able to survive or reproduce in a given environment (noun, the evolutionary process that leads to the origin and maintenance of such traits (verb) Domesticated plants and animals; selection experiments in genetics. Many people employed globally that are genetically modifying plants and animals (plant and animal breeders) Scientists can practice if interested in uncovering genes for traits. No purpose or goal; simply a blind, mechanistic process with no foresight.
