From the present and previous data , eighteen different KOX genes have been located at least two by two within nine DNA fragments of 200 to 580 kb .
from the present and previous data , eighteen different kox genes have been located at least two by two within nine dna fragments of 200 to 580 kb .
O O O O O O O O O B-DNA_family_or_group I-DNA_family_or_group O O O O O O O O O O B-DNA_molecule I-DNA_molecule O O O O O O