The first stage of human development is the fused nucleus of a sperm cell and an ovum, also called a(n)
A) oocyte
B) zygote
C) foetus
D) embryo

Name: The first stage of human development is the fused nucleus of a sperm cell and an ovum, also called a(n) A) oocyte B) zygote C) foetus D) embryo
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The fused nucleus of a sperm cell and an ovum is known as a zygote. It is the first stage of human development and contains all the genetic material necessary for the formation of a human being.

The First Stage of Human Development Is the Fused Nucleus