During which trimester of a woman's pregnancy do the toenails, lips, and eyelashes of the fetus usually appear? A. Third trimester B. Fourth trimester C. Second trimester D. First trimester

Pepsin is an enzyme in the stomach that breaks polypeptides into amino acids. pepsin functions best at a ph of around 1.5. what would be the most likely result if the ph of the stomach were increased to 5

What happens when the cell copies its chromosomes

In pea plants, yellow seed color (y) is dominant and green seed color (y) is recessive. based on the punnett squares, what are the chances that the offspring in the second generation will have green seeds? first generation y y y yy yy y yy yy second generation y y y yy yy y yy yy there is a % chance that the offspring will have green seeds.