KINE 200 Lecture Notes - Lecture 10: Microevolution, Macroevolution, Prokaryote
2 Mar 2017
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Document Summary
Some alleles of genes become more common, while other alleles become less common from generation to the next. Occurs in populations not individuals: first phase began 500-600 million years after earth was formed, or 4 billion (earth formed ~ 4. 5 billion years ago). First vapor in atmosphere cools and condenses to form water. Leads to cellular called protocells, which evolve into prokaryotic cells. About 1. 2 billion years ago eukaryotic cells evolve. Eukaryotic cells feature organelles that arise from prokaryotic cells consuming bacteria capable of specific iologiccal processes. Theory that states that eukaryotic organisms arose from a large prokaryote ingesting another prokaryote. The two existed in a symbiotic relationship allowing both to from the presence of the other. The arrangement became permanent giving rise to the first membrane organelles. Chloroplasts & mitochondria - have their own dna separate from the cell. 3 phases of evolution (continued: third phase results in appearance of multicellular organisms.
