this dna segment overlaps a larger region of dna ( 40 kilobase pairs ) previously identified to be around the leu2 locus on chromosome iii [ chinault , a.c. & carbon , j . ( 1979 ) gene 5 , 111-126 ] and physically establishes the directionality of the cloned dna sequences with respect to the genetic map and the centromere .
C0008633
chromosome
C0007709
centromere