Dominant & Recessive Genes...NOT JEANS

In this class we looked at dominant and recessive genes and how they act over generations in a given population.  To do this everyone in the population (our class) was a Aa and they randomly selected one of someone else's genes and one of their own to show that their offspring would be that.  Although AA and Aa will show the same phenotype, we took a count of AA, Aa, and aa to find how genes change after 5 generations.  In the end of our first experiment we found that AA was 10, Aa was 3, and aa was 3.  Using the Hardy Weinberg formula we found that A showed up 57 % of the time while a showed up 43% of the time.  In the next step we took two separate populations, one of 6 and one of 10.  In the 6 population 3 were AA and 3 were Aa.  this showed us again using the formula, that A showed up 50% of the time and a showed up the other 50% of the time.  Recessive genes may rarely show on the phenotype because there has to be two present for a phenotype to show.  In Aa, only the dominant gene shows because it dominates the recessive gene.  This is is how genes work and do not confuse them with jeans this took me about an hour to figure out....