Answer :
Final answer:
Mitosis is the cell division process that helps a single-celled zygote develop into a multi-celled organism through rapid cell division and specialization.
Explanation:
Mitosis is the process of cell division that transforms a single-celled zygote into a multi-celled organism. After fertilization, the zygote undergoes rapid cell division to form a hollow ball of cells called a blastula, which further develops into more specialized cells and eventually different organs and body parts.
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