01:119:115 Study Guide - Midterm Guide: Last Universal Common Ancestor, Lytic Cycle, Polytomy
18 Mar 2018
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Ancestral traits of deuterostomes: mitochondria, cytoskeleton, radial symmetry, so on (anything behind the tree or not shared derived traits) Shared derived trait of lophotrochozoa: none really, but dna. Chordates: you do not need to know the scientific names. Parts of a tree: polytomy, sister taxon, basal taxon. Lysogenic: attach (make a prophage: genome, vertical transmission: it will end up in daughter cell. What cant viruses not do: reproduce, metabolism, no membrane bound organelles, no ribosomes, they need host cells. It does not have a nucleus, no mitochondria, no chloroplasts. Starting with bacteria: peptidoglycan, (2 types of cell walls) Bacteria do all of the ones listed below: Photoautotroph: photosynthesis, using light to get energy, fixing carbon to make own food. Photoheterotroph: using light for energy, ingest organic carbon. Chemoautotroph: fixing carbon, using inorganic chemicals to get energy. Genetic diversity: binary fission (no crossing over meiosis) Derived traits: nucleus, mitochondria (proteobacteria - alpha) Secondary endo: eu is eaken: excavata: genetic (dna) evidence.
