The karyotype of a patient with Androgen Insensitivity Syndrome is –: (A) 46 XX, (B) 46 XY, (C) 47 XXY, (D) 45 XO
Answer is B. An 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.