Q. In maize, hybrid vigour is exploited by
A) crossing of two inbred parental lines
B) harvesting seeds from the most productive plants
C) inducing mutations
D) bombarding the seeds with DNA
Explanation
[Solution from source] Hybrid maize is produced by crossing two different inbred (homozygous) lines; the F1 shows heterosis with higher yield and vigour. Simply selecting seeds from good plants or inducing mutations does not produce hybrid vigour. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.