The Prophet Mohammad said : All of the Sons of Adam (men) will decay except for the bone of coccyx (tailbone). From it he (man) was created and by it he will be reconstructed.
The German scientist Hans Spemann started his experiments with amphibians by inserting a primary organizer (which gives rise to the main axis of the embryo) he had cut out from one embryo under the epiblast of another embryo of the same age (first embryonic stage third or fourth week).
This led to the formation of a second embryo from the implanted part, which has been inserted into a new environment. The implanted part had influence on the surrounding cells of the new environment. That way a second embryo is formed in the first embryo.
In 1931 Spemann ground the primary organizer and implanted it again. The grinding did not change the results of the experiment; the second embryo was formed anyhow. In 1933 Spemann and his scientists repeated the same experiment but this time they BOILED the primary organizer before. But despite boiling a second embryo was formed. It was shown that the cells could not be influenced and the cells after the Embryo`s complete Formation moved to the Tailbone (Coccyx) . In 1935 Spemann got the NOBEL PRIZE for the discovery of the primary organizer.
But The Prophet Mohammad told about this Scientific Phenomenon 1400 years Ago