BISC208 Lecture Notes - Lecture 10: Endoplasmic Reticulum, Cellulose, Macroevolution
5 Apr 2016
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Document Summary
Evolution: a change in one or more heritable characteristics of a population from one generation to the next; process of change over time. No some are not inherited variations and some are inherited variations = genetic traits. Analysis of today"s species to make predictions: anatomical features, molecular signature (genomics, proteomics) Analysis of fossil record: anatomical features, discovery site (soil prof/depth, diet, molecular evidence often poor mitochondrial dna. Phylogenic tree: branch length is proportional to the # of substitutions. Decaying carbon; soil profile, rock types, radioisotopes. Igneous rock volcanic origin: not good for preserving living organisms, sedimentary porous, preserves life, sandstone, conglomerate, limestone. Atoms: nucleus (p + n) and electrons. Different isotopes of the same element behave chemically like the atoms of that element. It is not the strongest of the species that survives, nor the most intelligent that survives. It is the one that is the most adaptable to change. -darwin (cid:2) Exchange of genetic material among different species.
