This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Genetics, Subject name: Pathology
Karyotype of a male patient shows the following, what is the clinical abnormality that is expected? 
Select and explain. 
A. Turner syndrome, B. Kallman syndrome, C. Androgen insensitivity syndrome, D. Down syndrome
A: Turner syndrome
Answer: A: Turner syndrome 
Explanation: Ans. (a) Turner syndrome(Ref: R 9th/pg 166; 8th/pg 165)In the given karyotype, we can observe that there is only 1 X chromosomes and no Y chromosome. This suggests the karyotype of patient as 45 XO (Turners Syndrome)