Given a context passage, generate a question from the passage such that its answer is shortest continous span from the passage.
Q: In follicular lymphoma, a chromosomal translocation commonly occurs between the fourteenth and the eighteenth chromosomes -- t(14;18) -- which places the Bcl-2 gene from chromosome 18 next to the immunoglobulin heavy chain locus on chromosome 14.
A:
Which chromosone can you find Bcl-2?