Q. In maize, hybrid vigour is exploited by :
A) bombarding the protoplast with DNA
B) crossing of two inbreed parental lines
C) harvesting seeds from the most productive plants
D) inducing mutations
Explanation
[Solution from source] Hybrid vigour is obtained by crossing two different inbred lines; the F1 hybrid outperforms both parents. Simply picking seed from the best plants is mass selection and does not exploit heterosis. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.