Question
The pea plants produced from the seeds obtained from a cross between hybrid tall (Tt) and pure dwarf (tt) pea plants will be-
- All tall
- All dwarf
- 50% tall and 50% dwarf
- 75% tall and 25% dwarf.
Answer
50% tall and 50% dwarf.
Explanation:
In this cross, all the F1 progeny plants will be tall as T is dominant over t. When these F1 progeny plants are self-crossed, the resulting F2 progeny will show a 1:2:1 genotype ratio (TT:Tt:tt) and a 3:1 phenotype ratio (tall: dwarf). Thus, 50% of the plants will be tall and 50% will be dwarf.
