10/1 Brine Shrimp Lab/Natural Selection

Natural selection and how it applies to different species:

Adaptation---> Change---> Offspring

DNA Mutation passed on causes variation of shape, size, color, or texture. One cannot evolve, but a population can. Generations evolve. 

+... Better adapted

-... Greater chance of dying. 

Brine Shrimp Lab:

Today we set up our lab by preparing five beakers of 30-mL salt solutions using sodium chloride and distilled water. Each solution have 0%, 0.5%, 1%, 1.5% and 2% of NaCl.

We are trying to figure out which solution the shrimp has a better chance of adapting to. 

If the solution of salt is too high, each egg will be covered in a hardened, brown film.

So...

We counted and put 20-40 eggs in each solution and will count them after 24 hours to see which had survived.