Class 12th Biology 2017 Set3 Outside Delhi Board Paper Solution

Question 24

A pea plant bearing axial flowers is crossed with a pea plant bearing terminal flowers. The cross is carried out to find the genotype of the pea plant bearing axial flowers. Work out the cross to show the conclusions you arrive at.

 

Answer

(i) If the plant is homozygous for the dominant trait

(ii) If the plant is hetrozygous for the dominant trait

Conclusion : If all progeny show axial flowers (dominant) the plant is homozygous (AA) , If 50 % of Progeny show Axial flower (Dominant) and 50% Terminal flower (Recessive) the plant is heterozygous