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Plant and animal breeding
Concepts tested here
- Hybrid vigour
All Questions
2011 AIPMT-PRE 1 question
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When two unrelated individuals or lines are crossed, the performance of $F_1$ hybrid is often superior to both its parents. This phenomenon is calledThe superiority of the $F_1$ hybrid over both of its parents in characters such as yield, size, growth rate and resistance is called heterosis or hybrid vigour.
It arises on crossing unrelated (genetically different) individuals or lines, and is exploited in hybrid maize, jowar and bajra.
Metamorphosis is the change of a larva into an adult.
Transformation is the uptake of foreign DNA by a cell.
Splicing is the removal of introns and joining of exons in hnRNA.
Hence the phenomenon is called heterosis.