BIOL 202 Lecture 10: lecture 10
Document Summary
The constancy of allele frequencies when there are no acting evolutionary forces. If a population is not in hardy-weinberg proportions, then one of the factors influencing population genetics is present. F is the probability of the offspring being identical or homozygous by descent (ibd) Note that the population migrates towards homozygosity. Avery, macleod, mccarty mice experiment: heat killed-s strain (virulent) combined with r strain resulted in death of mice transformation. Herschey and chase: radiolabelled sulphur on protein and phosphorus in dna independently. After infection by bacteriophage, blending, and centrifugation, radiolabelled p was present in cells. 1. 9 meters of dna must be packaged in a cell nucleus that is about 10 microns in diameter. C-value = dna content of an organism: no correlation b/w genome size and biological complexity of an organism. Dna on a cscl gradient prod. a single band at a given density, regardless of frag. Dna density inc. w/ inc. % of g:c.
