The ability for cells to produce more cells is because of what process

The ability for cells to produce more cells is because of Mitosis and Meiosis.

Explanation:

In a process called mitosis, a cell is split into two parts. Mitosis produces two genetically identical "daughter" cells from the same parent cell. Another type of cell division, meiosis, creates four daughter cells that are genetically separate from each other and from the original parent cell. Only certain cells can perform meiosis: those that will become eggs in women and sperm in men.

the answer is a or when it says crossing over

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