ANT220H5 Lecture Notes - Lecture 3: Germ Theory Of Disease, Louis Pasteur, Mycobacterium Leprae
Document Summary
Thomas malthus 1798 the principles of populations food supply increases much slower than pop. Origins of species by means of natural selection. The h. m. s begal was the ship darwin studied on **** midterm: Mutation natural selection sexual selection gene flow (change in allele frequencies) genetic drift (purely by chance) there must be variation of a species for the species to survive mutation causes this it is environmental determined. Francis crick, rosalind franklin, james watson and maurice wilkins discovered dna. 1962 nobel prize for physiology or medicine awarded to crick, watson and wilkins. Chromosome: paired rod-shaped structures within the cell"s nucleus that carry genetic information; contain many alleles; 23 pair in humans (22 somatic/autosomal, 1 gametic) Allele: one of a pair of genes. Genome: all the genes that exist within an organism. Genotype: total complement of genes of an organism. Phenotype: observable physical appearance of an organism influenced by envorimenent. Natural selection can only act on the phenotype.
