It is a process which converts a single-celled zygote into a great number of cells, which then differentiate into tissues.

Mitosis
Meiosis
Fractionation
Regenration

The correct answer is A. Mitosis.

Mitosis is a type of cell division that results in two identical daughter cells. It is the process by which a cell grows and divides into two identical daughter cells. Mitosis is essential for growth, development, and repair of tissues.

Meiosis is a type of cell division that results in four daughter cells, each with half the number of chromosomes as the parent cell. Meiosis is essential for sexual reproduction.

Fractionation is the process of dividing a substance into smaller parts. It can be done by physical or chemical means.

Regeneration is the process of replacing lost or damaged tissue. It can be done by natural or artificial means.

Mitosis is the correct answer because it is the process by which a cell grows and divides into two identical daughter cells. This process is essential for growth, development, and repair of tissues.

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