Answer:
mutation, recombination, and immigration of genes.
The mitochondria converts food into energy
Sex is important because its how we reproduce we create new life so that they can create new life and so on with out sex theres no life if that makes sense
The nucleus of the cell directs cell activity and acts like the control center. This is the place where gene activity is controlled in terms of the replication of the genes. In addition the movement and actions of the cell are also dictated from the nucleus.