Salam, 23:12 And certainly did We create man from an extract of clay. 23:13 Then We placed him as a sperm-drop in a firm lodging. 23:14 Then We placed him as a sperm-drop in a firm lodging. After this verses he told me the baby is created from 1 Spermatozoon. Not from a drop. The sperm-drop contain millions of spermatozoons. The sperm-drop does not become an embryo, the embryo is the union between an ovum and a spermatozoon. My friend also told me that the way an embryo is created according to quran is the same as Galen (a roman doctor) told it in one of his book.