Answer:
a) The set of genes present in the F1 generation is T, T, and t, t.
b) F1 progeny are all tall because of the dominance of the dominant Tall (T) gene over the recessive dwarf (tt) gene.
c) When F1 plants were self-pollinated, out of 800, 600 plants would be tall and 200 would be short plants.
d) The genotype of F2 generation- TT:Tt: tt.
Explanation:
- The crossing was done between tall (TT) and short (tt) pea plants.
- The offspring obtained in the F1 generation would be tall (Tt).
- Thus, the set of genes present in the F1 generation is T, t and T, t.
- The T (tall) gene is dominant over the t (short) recessive gene. The reason for the observation of only tall plants in the F1 generation is the law of dominance.
- On self-pollinating the F1 plants, the plants produced would be TT, Tt, and tt.
Tt X Tt
Progeny TT, Tt, tT, and tt
- Out of 800 plants produced, 600 plants would be tall and 200 plants would be short.
- The phenotypic ratio for F1 generation is 3 Tall: 1 short.
- The genotype of F2 generation is TT, Tt, tT, and tt