DNA - DNA The Chemical Nature of the Gene DNA...

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DNA: The Chemical Nature of the Gene DNA double-stranded spiral: stability and permanence • 1856 – Neander Valley, Germany • Neanderthal – roamed Europe around 200, 000 years ago, disappearing 30,000 – 40,000 years ago • 1997 - DNA from the bone, PCR amplification and analysis of mitochondrial DNA – different from modern humans and from our ancestors Cro-Magnons Key Characteristics of Genetic Material 1. Genetic Material must contain complex information capability to store a large amount of information – instructions for all the traits 2. Genetic Material must replicate faithfully – the capacity to be copied accurately 3. Genetic Material must encode the phenotype – “code for” traits – translate genetic information into the amino acid sequence of proteins All Genetic Information Is Encoded in the Structure of DNA or RNA DNA as the Source of Genetic Information The discovery of the transforming principle (Dr. Griffith’s experiment with
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DNA - DNA The Chemical Nature of the Gene DNA...

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