Bio Evolution - Evolution Chapter 15 Micro and Macro...

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Evolution Chapter 15 Micro and Macro Evolution ... so what is it? When some alleles become more common in a population, and other less common, from one generation to the next. Therefore, it does not happen at the level of individuals within a population... Evolution, a unifying Theory rnor provides us a means of understanding nature in all its complexity LAllows understanding of familiar things • e.g., Giant redwoods, peacocks, etc. lilAllows an understanding of new natural phenomena • e.g., Strains of bacteria are becoming resistant to antibiotics History of evolutionary thought Jean-Baptiste Lamarck (early 1800s) - inheritance of acquired characteristics First to suggest that animals could change or become extinct in response to interactions with their environment Charles Darwin (mid 1800s) - Natural Selection The alleles of the organisms that are best at reproducing will the be the ones that are most oresent in the next generation 'Modern Evolutionary Theory Huxley and many others. Taking the idea of natural selection and what we know of genes, and genetic inheritance As well as population genetics, and paleontology These ideas support and help to explain each other on both the micro and macro scale... Microevolution Individuals do not evolve. Only populations evolve.
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