BIO E105 Lecture Notes - Lecture 1: Cell Theory, Multicellular Organism, Natural Selection
Document Summary
Course overview levels of biological organization: molecules, cells, organ systems (physiology, evolution (multicellular organism, population, community) What are five fundamental characteristics of all living organisms: reproduction, energy, cells, hereditary info (genes, evolution. Two theories form the framework for modern biology. Cell theory (what are organisms made of?) Theory of evolution by natural selection (where do organisms come from?) Theories explanations for a very general class of phenomena or observation that are supports by a wide body of evidence. Theories have two components: pattern (something that occurs in the natural world) & process (responsible for creating pattern) 1858 charles darwin & alfred russel wallace made two claims regarding natural world: all species related by common ancestry (pattern, characteristics of species can be modified from generation to generation, descent with modification (process) Evolution: > change in the characteristics of a population over time. > means that species are related to one another and can change through time.
