BIOL 1202 Lecture Notes - Lecture 1: Species Problem, Lynn Margulis, Helicase
2 Jul 2015
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Coevolution- two things changing over time: coli- good, living in intestines to help digestion. 10x more microbes on and in you than cells in your body (50 trillion. 500 trillion cells of microbes not our own (under nails, in nostrils) Cells come from pre-existing cells; species come from pre-existing species. Prokaryotes: bacteria and archaea (on exam 1 and final) Family: genus (capitalized and italicized, species. Share five categories with chimps (eukarya, animalia, chordata, mamalia, primates) Genus: may or may not interbreed, defines the biological species concept. Species: all organisms that can interbreed, based on the ability to reproduce in nature. Use all traits (dna) that you can record for asexual organisms. Taxonomy is not a perfect process because of new technology. Golden mole more related to elephants than moles. Biodiversity: more species are being found; 1. 5 identified, nearly 3 times not discovered. Being a microbes is not a taxonomic classifier (all domains contain microbes)
