passages.id: split_1_test_3463_passage
passages.type: progene_text
passages.text: The rearrangement is governed by the product of a gene named spoIVCA located in the excised DNA , as demonstrated by the observations (1) that the product of spoIVCA , but not the product of any other stage - IV sporulation gene tested , is required for the rearrangement , and (2) that the presence of a cloned copy of the rearranged sigK gene in the chromosome bypasses the requirement for the spoIVCA gene product in sporulation .