Honors Bio class 15

Today in class we reviewed our results on the brine shrimp lab and graphed it on a whiteboard: 

Next we discussed the significance of these numbers:

We concluded that because none of them were at 0% viability besides the 0% NaCl concentrated water, that at least a few had adapted to that specific concentration through mutation in their parents DNA (osmosis).

Next we began an activity with red and green beads where we threw in 25 of each color and drew them at random in pairs. The read beads represented the dominant allele (H) while the green beads represented the recessive alleles (h). The dominant alleles represent the tigers with fur (good), while the recessive alleles represented tigers with no fur (lethal). If we pulled a green and a green those would immediately die and not get put back into the bag. We recorded our data by ten generations (10 pulls). Each time the population would get smaller and change the frequency. 

We concluded that the recessive allele frequency decreased but the allele would not disappear.