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: Medicine
The karyotype of patient with androgen insensitivity syndrome is : 
Select and explain. 
A. 46XX, B. 46XY, C. 47XXY, D. 45XO
B: 46XY
Answer: B: 46XY 
Explanation: Answer is B (46XY) : Individual with 'androgen insensitivity syndrome' are XY individuals (male karyotype) with a female phenotype. Mutation in the androgen receptor causes resistance to androgen action and the androgen insensitivity syndrome results.