Alleles. Alleles are the "same" genes, but provide a variation of the intended function.
1st -When cells are small, the movement of food and waste can be efficiently handled by the cell membrane
Answer:
Kidneys
Explanation:
ADH is a chemical produced in the brain that causes the kidneys to release less water, decreasing the amount of urine produced.
Gametes
gametes is another word for sex cells
