BGYB51H3 Lecture 7 Notes Oct 1

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Department
Biological Sciences
Course
BIOC51H3
Professor
Maydianne Andrade
Semester
Fall

Description
BGYB51H3 Lecture 7 Notes -without evolutionary knowledge, hypotheses about macroevolutionary changes L[ tested (refer to testes example) -control of phylogeny is the evolutionary history of an organism -phylogenies are hypotheses that can be tested -a branch is a single taxonomic group through time -nodes show a common ancestor for branches and are the sites of a split in lineage -terminal node is most recent single taxon descendant -sister taxa share more recent common ancestor -traits are scored as discrete or distant data -discrete data have only certain states possible -distance data has consistent range of values -phylogenetic trees should minimize homoplasies because they are misleading -homoplasy is a trait similar because of convergent evolution or reversal (usually occurs when two different species are grown up in similar environments) -finding more traits eliminate
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