BIOL 1001 Study Guide - Midterm Guide: Gamete, Allopatric Speciation, Polyploid
12 Mar 2017
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Words to define: phynetic approach: study of relationships among a group of organisms because of degree of similarity b/t them. It looks at the degree of similarity in molecular, phenotypic, or anatomical. Includes organisms that have developed similar morphological features through convergent evolution cladistics approach: defined as study of the pathways of evolution. Organisms in a single class may be morphologically different but they share an evolutionary relationship. There are species that have similar, corresponding structures even without phyletic continuity. These species belong to different taxa or linages may exhibit homoplasy as a result of convergence. These species may share a similar environment & response to it through similar adaptive mechanisms. Ex: wings of birds & bats which are different lineages: analogy: structural or behaviour similarity in terms of functions b/t unrelated species or organisms but do not share a common ancestral or developmental origin.
