BIO120H1 Lecture Notes - Philippine Standard Time, Genetic Drift, Potentilla
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BIO120H1 Full Course Notes
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Key concepts/ terms: genetic differentiation, geographical variation, population, phenotypic plasticity, migration, reciprocal transplant studies, gene flow, ecological race, population differentiation: gene flow, geographical variation, experimental studies of local adaptation: phenotypic plasticity, transplant studies. If there is no mating then there is no gene flow. Populations are frequently sub-divided into smaller units based on ecological or behaviour factors. For example, populations of fish in tide pools, trees in farmland woodlots, and insects on host plants, are sub- divided because suitable habitats are not continuous in distribution. In fact, a continuum exists between large populations with random mating and small sub-divided populations with localized inbreeding. The degree to which a population can be delimited from other populations depends on the level of gene flow between them. Migration can be thought of as the movement of individuals from one population into another, whereas gene flow refers to the movement of genes from one population into another.