Quiz #1 1) Proximate vs. Ultimate causation 2) Darwin’s anticipates the argument against sterile castes in insects – Darwin observed that incidental hybridization would produce sterile offspring (cross a donkey and a horse = sterile mule) 3) Population of bird before/after drought – differences in mean beak size. Darwin’s postulates proved = survivorship is not random (natural selection), individuals within species are variable, and more species are produced than can survive. 4) Inheritance of acquired characteristics do not support evolution (Lamarck – use and disuse) Lecture #4 1) Endosymbiotic Theory – Mitochondria and chloroplasts in eukaryotic cells arose through uptake and eventual integration of bacterial cells. a) Cell wall is lost first, allows for the increase in size of the cell (decreased surface to volume ratio). To mediate this, the cell membrane would infold, forming the ER, Golgi, and nucleus. Cytoskeleton must have been in place though.
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This note was uploaded on 02/09/2012 for the course BIOL 104 taught by Professor Smith during the Spring '09 term at Arkansas State.