A - B - C - D - E - F - G - H - I - K - L - M - N - O - P - Q - R - S - T - U - V - X - Y - Z ZIFT - See Zygote Intrafallopian Transfer. Zona Pellucida - The protective outer membrane surrounding the egg. Zygote - A fertilized egg which has not yet divided. Zygote Intrafallopian Transfer - An ART in which eggs are removed from a woman's ovaries, fertilized with the man's sperm in a lab dish, and the resulting Zygotes are transferred into the woman's fallopian tubes during a minor surgical procedure.