From an En-laden population with C-I C-I crossed by a C allele, a colored exception was isolated. In subsequent tests with an En responsive c-m(r) tester, colorless kernels appeared among the progeny. This would indicate that En is not present and the original C-I mutated to c. From these tests, an insert of an I element cannot be determined since this would give the same phenotype.
Peter A. Peterson
Return to the MNL 60 On-Line Index
Return to the Maize Newsletter Index
Return to the Maize Genome Database Page