BIOL 412 Lecture Notes - Lecture 14: Ecological Speciation, Genetic Drift, Biogeography
Document Summary
Will look at the sources if a proper source. Last week talked about dispersal, mechanism and its importance. Can be thought of of the life of individual analogous to life of individual: evolve from other species, survive for a period of time, species may or may not leave descendant species, species goes extinct. A species if the fundamental taxonomic category of organisms. Biological species, morphological species, ecological and phylogenetic concept of species. Adaptation species will fill realized niche and at any location, they"ll be the only one occupying a niche have to outperform a species that"s similar adaptation are acquired characteristics. May diverge genetically due to mutation, genetic drift and natural selection. Processes: represent splitting of ancestral species into two or more daughter species ecological speciation development of reproductive isolation between two species as a result of divergent natural selection. Disruptive selection eg. three population of businessmen (short, average and tall) Business is competitive endeavor roadblock in order to succeed.
