Sperms Production
In Tafheem up Quran volume 6 zameema (ضمیمہ) no. 4 I find the answer of my question that in human embryo the location of gonads (tested and ovaries ) is under 11th and 12th rib and then testes moved down between legs in the end of embryo stage and may be after the birth and ovaries move down on the both sides of uterus 2- another aspect of this story is that the blood and nerve supply is also from those body parts which are located between backbone and ribs if you read Tafheem carefully you can also understand this aspect 3- testosterone harmones which develop sex characters and are also involve in this story are produced by gonads (testes and ovaries) and also by adrenal glands located on the upper side of kidneys which is also located under ribs If you mix these points you can understand that Quran is not against modern science