BIOL 111 Chapter Notes -Salmonella Enterica Subsp. Enterica, Competitive Exclusion Principle, Cladistics
Document Summary
Developing evolutionary classifications: evolutionary classifications is a hypothesis of the relationship among organisms and are based on the principle that the descendants of a coming ancestor should share any biological trait that first appeared in that ancestor, phylogeny is the evolutionary relationship, cladistic analysis is examination of the variation if sparrows" traits relative to a closely related species, to determine the phylogeny, evolutionary relationships are hard to figure out because descendant species might lose a trait evolved in their ancestor, or unrelated species may acquire identical traits via convergent evolution. Predation, mutualism, and competition derailed: community consists of all organisms living together in a particular habitat area, ecological niche is the role or the job of the species, the complex linkage among organisms inhabiting different niches in a community is often referred to as a food web. (spider web analogy, mutualism is the interaction between two species that benefit each other.
