NEET 2006 Biology question

In Maize, hybrid vigour is exploited by-

(1)Bombarding the protoplast with DNA
(2)Crossing of two inbred parental linesCorrect
(3)Harvesting seeds from the most productive plants
(4)Inducing mutations

Answer: (2)

Solution

Hybrid vigour (heterosis) is the superiority of F1 hybrids over their parents. In maize, two pure homozygous inbred lines are developed by repeated self-pollination and then crossed; the F1 hybrid seed shows increased

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Question ID VK-089667