DNA gel-blot analysis of two families segregating
for the Lg3-O mutation in a B73 inbred line. The genomic
DNA samples were digested with BamHI. Lane a, Lg3 plant
1678-7; lanes b (designated by arrows), seven progeny (four Lg3, three
wild type) of the cross B73 wild type × plant 1678-7; lane c,
plant 1678-8; lanes d (designated by arrows), seven progeny (four Lg3,
three wild type) of the cross B73 wild type × plant 1678-8; lane
e, B73 inbred tester. The DNA gel blot was probed with the
BglII 1.6-kb fragment from the putative lg3
clone. The arrow marks a 10-kb fragment always present in
Lg3-O heterozygotes but never present in wild-type
siblings. The number scale on the right is in kilobases.