Then it developed into a hanging mass (clinging to the womb like a nest). Then He created (in it the preliminary form of all the limbs of the body). Then He set (them) right
Which then became a clot (genetic structure), and (Allah) created him and proportioned him (according to his creational purpose).
Al-muntakhab fi tafsir al-Qur'an al-Karim
Then by union with its counterpart it became Notfa Amshag* "zygote" which developed into a clinging organism. Then Allah has given it form and shape, proportions and a constitution ensuring that the individual is not alone human, but unique - from the pattern of the finger prints to the number, colour, shape and length of the eyelashes, - ref. Human Embryology M.j.T.Fitz Gerald M.D., London, 197