Answer: the correct answer is 25%
T is the allele for tall plant, which is dominant trait. 't' is the allele for dwarf plant, which is a recessive trait.
Genotypes of the parent plants are- Tt and Tt. When they are crossed, there are 25% chances of producing tt offsprings. Refer the punnett square for this.
% of Offsprings with tt genotype = [tex]\frac{1}{4} \times 100[/tex]
= 25%
