Can a recessive phenotype turn into a dominant phenotype over time?

Why aren't the stains like crystal violet and safranin washed away with water during simple staining?

During a hot day, warm and moist air rises and cools in the atmosphere. which even would occur next on such a day? a. condensed droplets would gather to become water vapor. b. water vapor would condense into tiny droplets. c. water droplets would evaporate to form rain and snow.

Give examples of selective advantage of organism’s body part/organ