MCELLBI C61 Chapter Notes - Chapter 4: Oswald Avery, Cytosine, Francis Crick
19 Nov 2016
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Chapter 4: genes and the history of molecular biology. Charles darwin: mid-1800s introduced idea that life is deeply related; common origins. Posits that there must be underlying source of variation--something capable of changing--producing variant organisms that can be selected by natural/domestic processes. Associated with how information is stored and passed on from one generation to the next. Gregor mendel: catholic augustinian friar and abbot of his monastery. Various traits of pea plants (shape, texture, color of seed/pea pod/flower, size) parceled out in an orderly fashion during breeding from one generation to the next. Info needed to build organism is packaged into units associated with specific traits. Gene: fundamental units or packets of information. Genetics came from the word genesis (origin, birth). Fundamental units of heredity came to be called gene. Was associated with traits but still abstract concept. Connection between genes and physical properties of cells was obscure. Niels bohr: influential physicist in the development of quantum mechanics, second to.
