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One cell made you

Your life started the instant that your father’s sperm and your mother’s egg fused together forming one cell. The genes from the sperm and the egg spelled out instructions to make this first cell eventually become you.

Model of a Cell
Model of a Cell

A dot

Fertilisation is when the genetic material from the sperm cell fuses with the genetic material of the egg cell, making one cell.
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Body plan genes

Your mother and father's genes combined to give you a complete set of instructions for life.