2. Humans born without sweat glands usually do not survive. Why not?
Sweating is an important mechanism for maintaining temperature homeostasis.
Sweating is an important way of ridding the body of excess water.
Sweating is important for purging impurities from the body.
d. Sweat builds up in the body and causes swelling and tissue damage.

3. in the fruit fly, recessive mutation brown, b, causes brown color of the eye and absence of red pigment. recessive mutation p of another independent gene causes purple color of the eye and absence of brown pigment. the cross of a brown-eyed female and purple-eyed male produced wild type eyes. what will be the colors and their ratio in f2?