Mltochondria are the
of the cell.

powerhouse

Explanation:

The mitochondria are organelles located in the cell and play a crucial role in cell respiration where they produce ATP. ATP is basically the cell's energy source, so mitochondria is commonly known as the powerhouses of the cell because they produce this energy.

Hope this helps!

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).