Three dominant traits of corn seedlings, tunicate seed (t glossy appearance (g and liguled stem (l are studied along with their recessive counterparts, nontunicate (tt), nonglossy (gg), and liguleless (ll). a trihybrid plant with the three dominant traits is crossed to a nontunicate, nonglossy, liguleless plant. kernels on ears of progeny plants are scored for the traits, with the following results: