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Bio Final Keywords.docx

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Bio Final KeywordsOrganizing The Living WorldAdaptive Radiationa cluster of closely related species that are each adaptively specialized to a specific habitat or food source ie the molluscs and their different shell shapes mantles visceral masses etcAdvanced CharactersAnalogoussimilar or equivalent in some respects though otherwise dissimilar corresponding in function but not evolutionary origin wing of a bee and wings of hummingbird are analogousApomorphy similar characteristics that identify two or more animals as related usedin cladistics same as synapomorphy trait is possessed by their commonancestor but not the common ancestors ancestor Artificial TaxonomyAutoapomorphya derived trait that is unique to a given taxon or species not found in any other groups lineages or species even those most closely related Binomenname consisting of 2 names the name of the genus generic and speciesspecific Part of binomial nomenclature derived by Linnaeus mechanical taxonomy based on morphologyCamera Eyevisual system enclosed that projects image back on retina could say it isancestral to all organisms bc it got lost amongst cladogram acoelomateworms never had it It arises both at beginning of cladogram ancestralbut again in the vertebrates and molluscs So therefore its actually notfrom common ancestor but gained throughout Character Convergenceprocess whereby 2 relatively evolved species interact so that one converges toward the other with respect to one or moretrait convergent evolution involved Character Polaritywhen several versions of a feature is observed in various specieshelpful to determine which is the older or primitive version andwhich are more derived modified that evolved later via modification of original character Character Reversalresemblance bw 2 taxa bc one of them has evolved a newcharacter then lost it again and the other taxon has never evolved it Cladea monophyletic group of organisms that share homologous features derived from a common ancestor Cladisticsan approach to systematics that uses shared derived characters to infer thephylogenic relationships and evolutionary history of groups of organisms Cladograma branching diagram in which the end points of the branches representdifferent species of organisms used to illustrate phylogenic relationships Classical TaxonomyClassificationan arrangement of organisms into hierarchical groups that reflectrelatednessCommon Ancestoran ancestor that 2 or more descendants have in common Convergent Evolutionevolution of similar adaptations in distantly related organisms that occupy similar environments homoplasy
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