Question

Which genetic phenomenon, exploited commercially in the production of hybrid seed for crops such as maize, bajra and sunflower, refers to the superior performance (in terms of yield, vigour or other desirable traits) of the F1 hybrid offspring compared with either of its two genetically distinct parental lines?

A Inbreeding depression
B Genetic drift
C Polyploidy
D Linkage disequilibrium
E Heterosis (hybrid vigour)
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