In a garden pea, the axial flower is dominant to terminal flower. What will be the percentage of offsprings with terminal flowers, when two heterozygous plants are crossed?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) -25%
If axial (A) flower is dominant to terminal (a) flower, and both parents are heterozygous (Aa), the Punnett square for the cross would look like this:
In this Punnett square, there are four possible combinations of alleles in the offspring:
- AA (axial flower)
- Aa (axial flower)
- Aa (axial flower)
- aa (terminal flower)
Out of these four combinations, 3 out of 4 (or 75%) have the possibility of producing axial flowers, while 1 out of 4 (or 25%) has the possibility of producing terminal flowers.
So, the correct answer is (1) 25%.