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Zygote - Wikipedia
Zygote | Definition, Development, Example, & Facts | Britannica
What Is a Zygote? Stages of Conception and Early Pregnancy
What is a zygote? | BabyCenter
Zygote - Definition and Examples | Biology Dictionary
Zygote Definition & Meaning - Merriam-Webster
What Is a Zygote and How Is It Formed? - What to Expect
Zygote | Encyclopedia.com
Zygote - Embryology
Zygote Definition and Examples - Biology Online Dictionary