PER2 [SEP] chromosome
On what chromosome is PER2 found? Which chromosome is PER2 located? On what chromosome is PER2 located? Which chromosone can you find PER2? Where is the gene PER2 located? Which chromosome is the gene PER2 located on? What is the name of the chromosome where you can find PER2? What chromosome is PER2? Which  chromosome is related with PER2?
chromosome 2
-1
Section::::Gene.

PER2
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