BIO120H1 Lecture Notes - Lecture 7: Genetic Drift, Epistasis, Neo-Darwinism
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BIO120H1 Full Course Notes
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Fisher-wright debate: neo-darwinism synthesis , wright saw an important role in genetic drift, fisher disagreed with wright, he saw importance in natural selection! Mark and recapture studies: use to measure an organism"s population, portion of population is captured, then marked, then released! Migration and gene ow: migration might not lead to gene ow, but can be a part of it! A population can migrate, but doesn"t survive, therefore no gene ow: gene ow occurs through gametes or by individuals sel ng! How do we measure gene ow: gene ow is dif cult to observe and measure, distinguish potential vs. actual! Potential but not actual: immigration of species, but no mating isn"t actual gene. Ow: use experimental approach, use neutral genetics markers! Transgenes: genes that are transfered into a crop using dna technology: transgenes can escape, because the genetic trait put in might not stay there!
