Imagine a person with genotype XY but their gene for testosterone is mutated such that it does not create any functional testosterone. Which of the following would be true of this person?
1) No development of testis but normal external genitalia
2) Normal testis development and regression of Mullerian system but female external genitalia
3) Failure of Wolffian duct system to develop
4) Normal testis development and regression of Mullerian system, failure of Wolffian duct system to develop and female external genitalia