Biology Question on Principles of Inheritance and Variation

Question

When two unrelated individuals or lines are crossed, the per romance of $F _{1}$ hybrid is often superior to both parents. This phenomenon is called:

Answer 1

Solution

The increased vigour displayed by the offspring from a cross between genetically different parents is called heterosis. Hybrids from crosses between different crop varieties (F, hybrids) are often stronger and produce better yields than the original varieties.