He’s more active outside of the womb, and only has milk instead of whatever the mother was eating.
Answer:Vacuole
Explanation:Vacuoles basically do the functions of storage, ingestion, digestion, etc.
Through reproduction. dark fur is a dominant trait and eventually if offspring of the one dark furred mouse reproduce enough, it will eventually spread to the whole population because it is a dominant gene and will overpower recessive genes of the other parent organism that the dominant mouse is reproducing with.