Queried GO term:

  idGO:0009113   Detailed information
  namepurine base biosynthetic process
  namespacebiological_process
  def"The chemical reactions and pathways resulting in the formation of purine bases, one of the two classes of nitrogen-containing ring compounds found in DNA and RNA, which include adenine and guanine." [GOC:go_curators, ISBN:0198506732]
  subsetgosubset_prok
  is_aGO:0006144 ! purine base metabolic process
  is_aGO:0046112 ! nucleobase biosynthetic process
  is_aGO:0046148 ! pigment biosynthetic process

Monarch genes assigned with this GO terms:

DPOGS2087872.9e-300
DPOGS2063591.9e-157