The Quran describes embryo development stages as: a sperm drop, then Alaqah, then a lump, then bones, and then the bones are clothed with flesh.

The sequence of embryo development described in the Quran is scientifically incorrect.

Hippocrates, who studied animal miscarriage embryos, stated that the embryo develops in four stages: the sperm of the male and female, the coagulation of the mother's blood, flesh beginning to form, and then bones growing hard.

Keith Moore himself recounted that the Quran's statements on embryology are largely copied from the works of Galen.

Keith Moore claimed that bones come before flesh in embryo development.

In his book "On Semen," the Greek scientist Galen described the human embryo stages as: the two semens, plus menstrual blood, unshaped flesh, bones, and then flesh growing on and around the bones.