BIO120H1 Lecture Notes - Lecture 8: Phenotypic Trait, Experimental Evolution, Co-Adaptation
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BIO120H1 Full Course Notes
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Natural selection is the principle that drives the evolution of adaptation; when population accumulate adaptation -- speciation. Has long floral tube pollinated by night-flying moth with exceptionally long proboscis. Darwin predicted the existence of the moth with long proboscis. Example of coadaptation (in both moth and flower) Relative genetic contribution of individuals to next generation as a result of differences in viability and fertility (= darwinian fitness) Some individuals better adapted to the environment and thus have higher fitness over which that don"t change. [noun] any trait that contributes to fitness by making an organism better able to survive or reproduce in a given environment. [verb] the evolutionary process that leads to the origin and maintenance of such traits. Domesticated plant and animals; selection experiments in genetics. Target on a specific trait wanted to change. No purpose or goal; simply a blind mechanistic process with no foresight.
