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: Pathology
Gene for Wilms tumor is located on- 
Select and explain. 
A. Chromosome 11, B. Chromosome 1, C. Chromosome10, D. Chromosome12
A: Chromosome 11
Answer: A: Chromosome 11 
Explanation: Mutations of the WT1 gene on chromosome 11p13 are observed in approximately 20% of Wilms tumors.
At least half of the Wilms tumors with mutations in WT1 also carry mutations in CTNNB1, the gene encoding the proto-oncogene beta-catenin.