Question

What will be the phenotypic ratio of round
seed to wrinkled seed in F2 generation if we crossed
a pure round seeded pea plant with
pure wrinkled seeded pea plant and in F1
generation only round seeded pea plant
comes into sight?​

Answer 1

Answer:

The selfing of F1 will give F2 generation, where there will be one homozygous dominant round seed plant (RR), two heterozygous round seed plants (Rr) and 1 homozygous recessive wrinkled seed plant (rr). Phenotypically, there will be 3 round seed plants and 1 wrinkled seed plant. Hence, the correct answer is '3:1'.