Final answer:
XY males who fail to produce androgens or have an inadequate androgen receptor develop female secondary sexual characteristics.
Step-by-step explanation:
Mutations that result in the failure to produce androgens or have an inadequate androgen receptor can lead to a condition called Androgen Insensitivity Disorder (AIS).
Individuals with AIS are born with XY chromosomes but develop and are raised as females.
This is due to a mutation in the androgen receptor gene, which is located on the X chromosome.
As a result, these individuals do not develop male secondary sexual characteristics but instead have female secondary sexual characteristics.