BIOL 2030 Lecture Notes - Lecture 13: Frederick Griffith, Nitrogenous Base, Heredity
16 Feb 2016
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1985: very first legal case that involved dna testing. Proteins were originally thought to carry heritable material due to. 1869: meichsher discovers nuclein (dna) in the nucleus of white. Frederick griffith: demonstrated that cells could be transformed their complexity and variety blood cells: genetic info can be taken from an external source and transferred into own dna. Studies on different strains of pneumonia virulent: experiments demonstrating transformation in bacteria forms are surrounded by a polysaccharide coat, making them smooth (s); non-virulent forms have no coat and appear rough (r) Mice injected with iiis bacteria and iir bacteria: iiis injected mice died and iiis bacteria, iir injected mice survived and no iir, mice injected with heat-killed iiis bacteria survived with no bacteria found in blood. Mice injected with heat-killed iiis bacteria and iir live bacteria died from pneumonia and live iiis bacteria was found in their blood. Griffiths) would find that iir took up the.
