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character: Cell Division

topic: The process of how cells reproduce, including mitosis and meiosis, and their role in human development after the zygote stage.

grade: 9

subject: Science

character: Zygote Formation

topic: The initial stage of human development where a sperm fertilizes an egg, leading to the first division of cells.

grade: 9

subject: Science

character: Embryonic Development

topic: Stages of human development following the zygote stage, which involve rapid cell division and differentiation.

grade: 9

subject: Science

character: Stem Cells

topic: Undifferentiated cells that have the ability to divide and develop into various cell types during early human development.

grade: 9

subject: Science