The Wolffian ducts, also known as mesonephric ducts, are paired structures that develop in the early stages of embryonic development. They play a crucial role in the formation of the male reproductive system, as they can differentiate into various male reproductive organs, such as the epididymis, vas deferens, and seminal vesicles. In females, the Wolffian ducts typically regress and do not contribute to the reproductive system. Instead, the Müllerian ducts, which develop alongside the Wolffian ducts, are responsible for forming the female reproductive structures, including the fallopian tubes, uterus, and vagina.