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.
It’s B. “It was doubled...”
Hope this helps... ^^
I think it’s because the bacteria has evolved and become immune to the antibiotics.
Answer:
Kingdom - Phylum - Order - Class - Genus - Family - Species
