What would cause a mammal to develop the anatomy of a male,regardless of its chromosomes?

Question

What would cause a mammal to develop the anatomy of a male,regardless of its chromosomes?​

Quizplus · Accepted Answer

Exposure to high levels of testosterone during an early stage of development can cause a mammal to develop male anatomy, regardless of its chromosomes. Testosterone is responsible for the development of male reproductive organs and secondary sex characteristics like facial hair, muscle mass, and a deeper voice. This process occurs during fetal development, and high levels of testosterone during this time can override the individual's genetic sex.

What Would Cause a Mammal to Develop the Anatomy of a Male,regardless