. "105440207"^^ . "operon"^^ . . "05440207-n"^^ . . . "a segment of DNA containing adjacent genes including structural genes and an operator gene and a regulatory gene"@en-us . "a segment of DNA containing adjacent genes including structural genes and an operator gene and a regulatory gene"@en-us . . "105127437"@en-us . . "operon"@en-us . . "0"^^ . . . "0"^^ .