male symbol
3.The ratios of fertile to sterile in the F_2 populations from the cross of 5460s with 5460 were 3:1 and the ratios in the B_1F_1 were 1:1 expected for monogenic control of sterility and revealed that 5460s was the mono-recessive-gene radiomutant for male sterility of 5460.The symbol “tins(t)”was temporarily assigned to this mutant gene.

