General Biology II
General Biology II BSC 1011
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This 28 page Class Notes was uploaded by Stefanie Zulauf on Monday October 12, 2015. The Class Notes belongs to BSC 1011 at Florida International University taught by Staff in Fall. Since its upload, it has received 8 views. For similar materials see /class/221750/bsc-1011-florida-international-university in Biological Sciences at Florida International University.
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Date Created: 10/12/15
Ancestral belonging to inherited from an ancestor Clade a group consisting of an ancestor and all of its descendants Derived Obtained from a source Homology Any characteristic of organisms derived from a common ancestor eg arm of a human wing of a bat leg of a dog same bones Homoplasy A character shared by a set of species but not present in their common ancestor Ingroup Monophyletic group that includes all taxa of interest to the current study Monophyletic A taX0n which forms a clade an ancestral species and all its descendants MRCA Most recent common ancestor Outgroup Group of organisms that serve as a reference group when determining evolutionary relationship Paraphyletic An ancestral species and some not all of its descendants Parsimony Among competing hypothesis the one with the fewest assumptions should be selected Grouping organisms in the basis of traits Outdated concept Polyphyletic A group characterized by homoplasies Does not include the common ancestor Sister taxa The closest relatives of a group in a phylogenetic tree Synapomorphy A trait shared by two or more taxa Inferred to have been present originated in their MRCA
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