7.2kb HindIII fragment that contains ry+ function.
Position of restriction fragment on reference sequence inferred by FlyBase curator.
When introduced into the genome of ry- flies P{Car20} restores normal eye pigmentation.
ry+t7.2 rescues ry506
One copy of ry+t7.2 restores full viability of homozygous ry506 flies on purine selection.