Parent pea plants were crossed for contrasting traits, i.e. round and wrinkled seeds. The progeny obtained in F 1 -generation is Rr, RR, Rr and rr. Which of these are dominant and recessive traits?
Tall plan (RR) : dominant trait
Wrinkled seed (rr) : recessive trait
From the above given progeny obtained in the F1 generation :
1 RR: dominant
2 Rr: dominant
1 rr: recessive
the ratio would be - 1:2:1