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
IQ related genes have recently been found on which chromosome ? 
Select and explain. 
A. Chromosome 21, B. Chromosome X, C. Chromosome 10, D. Chromosome 18
B: Chromosome X
Answer: B: Chromosome X 
Explanation: Ans. is 'b' i.e., Chromosome XA genomic distribution analysis demonstrated that IQ-related genes were enriched in seven regions of chromosome 7 and the X chromosome.'