An) ___________ is a single-celled organism that results from fertilization of the sperm and egg.

Name: An) ___________ is a single-celled organism that results from fertilization of the sperm and egg.
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A zygote is formed when the sperm and the egg fuse to form a single-celled organism. This marks the beginning of human development. The zygote undergoes cell division and differentiation, eventually becoming an embryo and then a fetus. The blastocyst and embryo stages occur after the zygote stage.

An) ___________ Is a Single-Celled Organism That Results from Fertilization