When Marcella reached puberty but did not begin to menstruate, her parents took her in for medical testing. Tests revealed that Marcella's chromosomes are XY and her gonads are producing testosterone, but she developed feminine external genitalia because her body is unable to respond to testosterone. Marcella is diagnosed with:

Question

Quizplus · Accepted Answer

Marcella's condition, characterized by XY chromosomes and the development of feminine external genitalia despite the body's production of testosterone, is indicative of androgen insensitivity syndrome. This occurs because her body is unable to respond to testosterone, leading to the development of female external characteristics despite male (XY) chromosomes.

When Marcella Reached Puberty but Did Not Begin to Menstruate