Tim Taylor is a senior writer at Innerbody Research focusing on human anatomy and physiology. Tim earned both his Bachelor of Science degree in Biology and his Master's degree in Teaching from the University of Pittsburgh.

Last updated: Jan 30th, 2026

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Fertilization refers to union of a female ovum (or egg) with the spermatozoa of a male and will initiate the process of sexual division or meiosis.

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Innerbody Research does not provide medical advice, diagnosis, or treatment. You must consult your own medical professional.