18563genesPT0000-00-00 00:00:00BT18564genomePTNT20015bacterial genesPTNT20141dominant genesPTNT20017lethal genesPTNT20142recessive genesPTNT20019regulator genesPTNT20018structural genesPTNT20020synthetic genesPTNT20016viral genesPTRT19082geneticsPT