Brakke M K, Samson R G, Compton W A
Genetics. 1981 Nov-Dec;99(3-4):481-5. doi: 10.1093/genetics/99.3-4.481.
Corn stocks showing virus-induced aberrant ratio (AR) at the "A" locus were found to have recessive alleles at the R and/or C loci. Since by the known pedigree these loci should be homozygous dominant, the results suggest an inactivation of maize genes by a mechanism as yet unknown. The presence of recessive alleles at these additional loci can explain the segregation ratios obtained in these particular stocks.