ANT131,3 - TheBiologicalBasisofLife TheBiologicalBasisofLife

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The Biological Basis of Life 18:56 The Biological Basis of Life Johann Gregor Mendel (1822-1884) Theory of Particulate Inheritance (1866) The Cell Prokaryotic cells Single-celled organisms (e.g. bacteria) Genetic materials not contained by a nucleus Earliest life traced back 3.7 billion years Eukaryotic cells Structually complex cells Appear 1.2 billion years ago. Chromosome Number Algae – 148 Potato – 48 House Fly – 12 Guinea Pig – 64 Chimpanzee – 48 Human – 46 Structure of DNA Twisted ladder or a double helix. Rungs of the ladder referred to as bases. Two bases make up a single rung of the ladder (base pairs) Single bases attached to a sugar and a phosphate to form a nucleotide. 4 Bases: Adenine, Thymine, Guanine, Cytosine. A-T, G-C
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Gene A sequence of bases on a DNA molecule Code for a particular Protein. Triplet code
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This note was uploaded on 03/01/2012 for the course ANT 131 taught by Professor Shannonnovak during the Spring '09 term at Syracuse.

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ANT131,3 - TheBiologicalBasisofLife TheBiologicalBasisofLife

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