phenotypic plasticity in water fleas (daphnia) is characterized by all the following except group of answer choices they are pale in coloration when living in water with a high concentration of oxygen. they experience changes in genotype when oxygen levels change. they have little hemoglobin when living in water with a high concentration of oxygen. phenotypic plasticity occurs at the biochemical, tissue, and organ level. they turn bright red when living in water with a low concentration of oxygen