The next step is to experiment. Most people say hypothesis instead of prediction.
The Answer is A. The presence of sodium potassium pumps has nothing to do with water moving in and out of cells.
Vertebrates have a back bone. They have living endoskeleton, pharnyx and efficient respiration, advanced nervous system, and paried limbs.
GgBb because heterozygous means you have 2 different alleles for both traits
