Biology for IGCSE & O level - Variation And Selection (Section 1 - No. 18)
Which of the following terms best describes what is meant by the term hybrid vigour?
The result of inbreeding.
A loss of vigour in offspring.
The enhanced vigour of offspring resulting from outbreeding.
A common occurrence in natural selection.
Spiegazione
Hybrid vigor is the increased health and vigor often seen in offspring from outbreeding.