Brine shrimp and natural selection

Today in class we want over the general concepts an data collected from the brine shrimp lab. We graphed the brine shrimp data using a simple line graph. This groups of egg's ideal salinity was 0.5, proven by the amount of eggs hatched in that solution. Our group of eggs however were not adapted to survive 1.0.  % salinity, causing an unusual dip in the line graph. The dip in the line graph could also be caused by human error. ( mixing of lids) 

We also brainstormed ways to expand the experiment: 

After this, we did a bead activity that used the pairing of random recessive and dominant  genes to show how natural selection works. The offspring with hh combination of genes died because they had no fur, while the combination of Hh and HH live on to pass on their genes. 

In the end, we learned that the recessive gene never goes away, no matter how random the pairings are. 

Then we also talked about other ways genes could be added to a community. 

Then we took a short quiz on natural selection.