Biology 110Exam 3 Study GuideEvolution and its genetic basisAssignmentAudesirk, Audesirk & Byers Selections from Chapters 14-16 & 18Background and reviewFigure 14-7Homology LimbComparative anatomy, embryology, biochemistry, molecular biologyHomology - common descentforelimbs: bat (also pterodactyl, bird - fly)dolphin (also seal - swim)dog (also sheep - run)human (also shrew - grasp)Figure 18-6Divergent (vs. convergent evolution)Phylogenetic tree Eukaryote evolutionisolating mechanismsRemember, species can reproduceFigure 16-10speciation in the same area (sympatric) Figure 16-9and in different areas (allopatric). There are also other .STORYMoths use sex attractant pheromones from female sensed by big feathery antennae in males.These may be molecules like acetates, chains10 to 15 carbons long.Two similar moths in same place (sympatric) do not mate, thus seem to be 2 species (Roelofs and Comeau, Science 165, 398-400, 1969).One uses molecule cis around one double bond, the other trans.For that to happen, one female would have to change pheromone used and a male at the same place and time would have to have a change in preference, an amazing jump (saltation).Divergent evolutionFigure 23-1Comparative anatomy, embryology, biochemistry, molecular biologyFigure E18-1can use "molecular" (biochemical) data to get relationships Figure 14-11also (cytochrome c sequence comparison between species)Figure 24-1