Hybrid vigour is mostly due to

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(C) Hybrid vigour,also known as $heterosis$,refers to the phenomenon where the progeny of a cross between two genetically different parents exhibits s

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Heterozygosity

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(C) Hybrid vigour,also known as $heterosis$,refers to the phenomenon where the progeny of a cross between two genetically different parents exhibits superior traits compared to the parents.This phenomenon is primarily attributed to $heterozygosity$,which occurs due to the union of genetically distinct gametes.$Heterozygosity$ helps in masking deleterious recessive alleles and promotes the expression of beneficial dominant alleles,leading to increased vigor,growth,and productivity in the hybrid offspring.

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