Q. When two unrelated individuals or lines are crossed, the performance of F1 hybrid is often superior to both its parents. This phenomenon, is called
A) Transformation
B) Splicing
C) Metamorphosis
D) heterosis
Explanation
The superiority of the hybrids over either of the parents (dominant or recessive) is called hybrid vigour (G. Shull).Heterosis is equivalent of hybrid vigour.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.