Foetus vs. Zygote — What's the Difference?

Variant of fetus.

A zygote (from Greek ζυγωτός zygōtos "joined" or "yoked", from ζυγοῦν zygoun "to join" or "to yoke") is a eukaryotic cell formed by a fertilization event between two gametes. The zygote's genome is a combination of the DNA in each gamete, and contains all of the genetic information necessary to form a new individual.

Alternative spelling of fetus

The cell formed by the union of two gametes, especially a fertilized ovum before cleavage.

Same as Fetus.

The organism that develops from a zygote.

An unborn or unhatched vertebrate in the later stages of development showing the main recognizable features of the mature animal

A fertilized egg cell.

The cell resulting from the union of an ovum and a spermatozoon (including the organism that develops from that cell)