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Define hybrid vigour....

Define hybrid vigour.

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The superiority of the hybrid obtained by cross breeding is called as Heterosis or Hybrid vigour.
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Assertion : Phenotypic superiority of hybrid over either of its parents in one or more traits is termed hybrid vigour. Reason : Suppression of expression of recessive harmful genes occurs in heterozygotes.

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Which of the following statements does not provide an explanation for hybrid vigour ?

Assertion:Hybrid is superior than either of its parents. Reason:hybrid vigour is lost inbreeding.

Write notes on interspecific hybridization.