BIOL 123 Lecture Notes - Lecture 3: Spontaneous Generation
Document Summary
The tree of life could have followed a variety of patterns, including an absence of evolution: the creationist system of life persisted through time. Life appeared on earth in a single point in time with fully formed species that. No evolution, with some variety in species. Assumed simultaneous appearance of species on earth, and remain unchanged through time. No replacement or origins of species, so there should be fewer species on earth. Ancient fossils of vertebrates and single celled species before fossils of vertebrates. Fossil record: record of life through fossils. The tree of life could have followed a variety of patterns, including an absence of evolution: the lamarckian system of life. Indicates when new species would appear spontaneously and change themselves over time through the differential exposure to the environment. Suggests the ancestors that needed certain traits would evolve and make new species off of that need.
