Question
When two unrelated individuals or lines are crossed, the performance of F1 hybrid is often superior to both its parents. This phenomenon is called
-
transformation
-
splicing
-
metamorphosis
-
heterosis
Solution
D.
heterosis
The superiority of hybrids over either of the parents (dominant or recessive is called hybrid vigour (G. shull). Heterosis is equivalent of hybrids vigour.