Watch this video lecture if you want to learn about the development of male and female genital tract and external genitalia with the help of colored labeled diagrams in a step-by-step manner. Timeline: 0:00 - Introduction 0:32 - Formation of urogenital ridge 2:23 - Migration of primordial germ cells and overview of cloaca 5:25 - Primitive reproductive system 8:12 - Differentiation of the gonads, function of testosterona and mullerian inhibitory factor 21:21 - Gubernaculum 24:25 - Differentiation of male and female genital tract and overview or urogenital sinus 27:27 - Development of external genitalia and differentiation of urogenital sinus