BI111 Lecture Notes - Lecture 5: Speciation, Systematics, Genetic Drift
Document Summary
Complete description of the role the species plays in its environment habitat requirements, nutritional and water needs. Idea that there is a one to one correspondence between a species and its niche. Species are a group of individual organisms adapted to a particular set of resources called a niche in the environemtn. Impossible for two species to coexist in the same location if their niches are too similar because of competition between them for the resources. Emphasis on selection is an important force preventing intermediate forms. Selection is key-individuals exploit resources because they have been to select to use those speci c ones can have selection. Uses species" own ecological usage to set limits. Di errences between species in form and behaviour are often related to di erences in the ecological resources the species. Emphasis on selection as an important force preventing intermediate forms (are less t compared to other phenotypes)
