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week 3 409

by: Mary-elizabeth Notetaker

week 3 409 Bio 409

Mary-elizabeth Notetaker
U of L

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About this Document

week 3
Evolutionary Biology
Jeffery Bara
Class Notes
Bio, bio409, evolutionarybiology
25 ?




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This 1 page Class Notes was uploaded by Mary-elizabeth Notetaker on Thursday September 8, 2016. The Class Notes belongs to Bio 409 at University of Louisville taught by Jeffery Bara in Fall 2016. Since its upload, it has received 5 views. For similar materials see Evolutionary Biology in Biology at University of Louisville.


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Date Created: 09/08/16
Week 3 Tuesday, September 2:21 PM Parsimony- simplest most likely Shared traits and minimize # trait transitions Trait matrix coded 0/1… 0 ancestral, 1 derived If trait lost after developed would be reversion(homoplasies) • evolution can occur w/in host ○ Rates of evol are higher here than btwn hosts across HIV genome ○ Strains less adapted to host have advantage during transmission.. Transmisson btwn host is more likely before evolution occurs in host • Ex) person a transmits virus to person b then they transmit to person c… later person a transmits to person d • Phylogenetic app: ○ Forensic evol  HIV strands relatedness.. Convict doctor ○ conservation policies  Pools… look at microbe 16s rna seq to find most recent common ancestor of microbes inside & outside reservde □ Many bac in reserve have marine most recent common ancestor, so pools in desert may be remnants of ancient sea so protected..underground connections btwn pools in & out of reserve ○ Sequence analysis  Reconstruct epidemics/outbreaks… ○ Trees to track trait evol  map trait/character of interest  Green algae- like multicell orgs □ Make tree w DNA seq data then masp multicell traits onto trait □ Trait gained & lost…. Implies ecological conds thru history can cause trait(partial somatic differentiation) to come and go Bio 409 Page 1


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