KpnI-PvuII fragment carrying both arm promoters (nucleotides 11 to 1792) drives expression of the Mmus\Cbx2 coding region (amino acids 2 to 519) fused to 5' untranslated leader nucleotides 4675-4683 of hb.
Mmus\Cbx2arm.PM is a suppressor of larval segment phenotype of Pc15
Mmus\Cbx2arm.PM is a suppressor of larval head phenotype of Pc15