This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
The karyotype in testicular feminising syndrome is? 
Select and explain. 
A. XX, B. XY, C. XXY, D. XXXY
B: XY
Answer: B: XY 
Explanation: Androgen insensitivity syndrome (AIS), formerly known as testicular feminization, is an X-linked recessive condition resulting in a failure of normal masculinization of the external genitalia in chromosomally male individuals.
An individual with 'androgen insensitivity syndrome' is XY individuals (male karyotype) with a female phenotype.