When a baby is born, the zygote has become about _____ trillion cells.

Name: When a baby is born, the zygote has become about _____ trillion cells.
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The zygote, which is formed by the union of a sperm and an egg, undergoes a series of cell divisions to form a blastocyst, which then implants in the uterus. The blastocyst then differentiates into the embryo and the placenta. By the time a baby is born, the zygote has become about 5 trillion cells.

When a Baby Is Born, the Zygote Has Become About