BIOL 142 Study Guide - Midterm Guide: Double Bond, Northern Blot, Nitrocellulose
Document Summary
Identify key events on the genetics timeline - people, chronology, puzzle pieces, importance of questions. Genetic code - crick, nirenberg, and khorana (1962) 1866 - mendel"s work is first published. 1869 - miescher discovers nuclein (dna) in the nuclei of white blood cells. 1887 - dna is the physical bases of heredity. Late 1800"s - kossel determines that dna contains nitrogenous bases. 1908 - archibald garrod - enzymes and genetics. 1928 - griffith shows transformation principle phenotypes can be transferred. 1941 -beadle & tatum - gene = protein. 1944 - avery, mcleod, mccarty - dna is agent of transformation. 1948 - chargaff and colleagues discover regularity in base ratios of dna. 1951 - alexander todd - polynucleotide chains. 1952 - hershey and chase - dna is material passed from parent to progeny. 1953 - watson and crick - secondary structure of dna. Three fields: transmission, molecular, and population genetics.
