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Useful Links for the Population Genetics lab http://http.bsd.uchicago.edu/ hgd-sad/HWSimulator/sim.cgi You can use this site to run simulations of evolution (at one locus with two alleles). This is a very helpful site for reinforcing the ideas in the populations genetics lab. A couple suggestions: 1) Run three simulations, with the initial allele frequencies at 50% each and survival at 100% for each phenotype, with the population size equal to 10 vs. 100. How do the results compare within and between population sizes? 2) Assign one of the homozygotes a survival percentage of 0, and run for 50 generations with a population of 1000. Does that allele disappear from the population? Explain. Dead Link http://www.science.mcmaster.ca/ Biology/4FF3/consgen/Macleod/SMPOP.HTM Why do we care about diversity, and what does population genetics have to do with it? Here are some ideas ... http://www.sciencenews.org/ sn_arc97/7_12_97/bob1.htm Some background on PTC and the genetics of taste http://www.people.virginia.edu/ ~rjh9u/tongroll.html We've been treating the ability to tongue roll as a single gene, two allele trait with the tongue rolling allele completely dominant. The reality may be a bit more complicated - here's a brief look at a contrasting view.