BIO 1130 Lecture Notes - Lecture 6: Germ Cell, Cell Theory, Zygote

• School: University of Ottawa
• Department: Biology
• Course: BIO 1130
• Professor: Jon Houseman

Document Summary

Jean- baptiste lamarck (1744-1829: transmutation of species. Inheritance of acquired traits o: over time organisms become modified to adapt to environment, simple. Some species will disappear: does not know: ( become gametes) As zygote divides, early stage, certain cells set aside to be germ cells. Essentialist explanation of change l transmutation (not lamarck) (rapid: dramatic change to make new species l transformation (slow) Darwin: doesn"t follow through with medicine or the church, cautious, wallace (indonesia) sends manuscript. Darwin has most diverse collection of natural history. Invites darwin and wallace to present at symposium together. Darwin continues work: takes lamarck"s theory, accepts gradual change, common ancestor, more diverse over time, 5 theories, first two accepted easily, no constancy of species. Structure does the same thing but different origin. Cytochrome c: amino acid sequence changes, gradual changes, multiplication of species, natural selection. Life not from spontaneous generation: traits that are advantageous have better fitness, pasteur (1822- 1895, germ theory, origin of species.