Lavonna is pregnant with twins and will have a boy and a girl. early in development, the are present in both the boy and the girl embryos. however, they are the precursors only for the male baby's internal reproductive structures.

The correct answer is: mesonephric duct

Explanation:

In mammals, mesonephric duct, also known as the Leydig's duct or Wolffian duct, is a paired organ that is present during the embryonic development.

It forms the trigone of the urinary bladder in both male and females. But it also differentiate to form the organ system of reproductive organs and the urinary system in males.

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