<prompt> Leydig cells are derived embryologically fromMesoderm of gonadal ridgeEndoderm of Genital tubercleGerm cellsNone of the above  <response>: Ans. is a i.e., Mesoderm of gonadal ridge Testosterone producing cells, called leyding cells, develop from mesoderm of the gonadal ridge and are located between sex cords.They produce testosterone by week 8. 