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SOME questions from January 20th 1- When on the test, are we expected to know the scientific names of all plants/animals from lecture slides? 2- Are the gradualism and punctuated equilibrium model accepted as counter-theories or coinciding theories? 3- When discussing evolution, the concept of a “common ancestor” is often mentioned, if evolution has always been occurring, where did the “common ancestor” come from or evolve from? 4- Are humans polymorhic? If so, could we evolve into separate species overtime? Evo-devo (interface between evolutionary biology and development) Genes that control development play a major role in evolution. Slight changes in the relative rates of growth during development can change the adult form substantially. Ex: skulls of humans and chimpanzees. Evolution of morphology that arises by a modification in allometric growth is an example of heterochrony: evolutionary change in the rate or timing of developmental events. pages 478-479 Fig. 24.19 Paedomorphosis (“child” and “formation”) If the rate of reproductive development accelerates compared to somatic development, the sexually mature stage of a species may retain body features that were juvenile structures in an ancestral species. Fig. 24.21 7- Is evolution goal oriented? Fig. 24.24 Chapter 26 Origin of Life Life History Chapter 28 Origins of Eukaryotic Diversity The Origin of Life 1- Non-living synthesis of small organic molecules. Primitive atmosphere Lightning 2- Joining of these small molecules into polymers. Ancient sea 3- Origin of self-replicating molecules, making inheritance possible. Fig. 26.10 Fig. 26.11 includ. aminoacids 4- Packaging of all these molecules into “protobionts. 5- Natural selection could refine protobionts containing hereditary information. Fig. 26.12 WHERE DID LIFE ORIGINATE? 1- Inorganic molecules in shallow seas, moist sediments, seafloor, deep-sea vents or volcanoes. 2-Organic molecules from meteorites and comets. Fig. 26.13 Fig. 7.4 Prokaryotes How did eukaryotic complexity evolve? Fig. 28.3 Eukaryotes The Origin of Eukaryotes Fig. 28.4 Relationship between the three domains of life Fig. 28.7 Diatom. Unicellular alga. pages 546-548 Fig. 28.1 Examples of “Protists” Plasmodial slime mold. Australian bull kelp. Multicellular alga: seaweed. Amoeba. Unicellular eukaryote. Figs. 26.2 to 26.7