Which of the following conditions represents | vedclass

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(D) Hybrid breakdown is a type of reproductive failure that occurs after the formation of a hybrid. In this condition,the $F_1$ hybrid is viable and f

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None of these

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(D) Hybrid breakdown is a type of reproductive failure that occurs after the formation of a hybrid. In this condition,the $F_1$ hybrid is viable and fertile,but the subsequent generation ($F_2$ or backcross) exhibits reduced viability or fertility. Option $A$ describes hybrid sterility (where the hybrid itself cannot produce functional gametes). Option $B$ describes pre-zygotic isolation. Option $C$ describes hybrid inviability. Therefore,none of the provided options correctly define hybrid breakdown.

Which of the following conditions represents hybrid breakdown?

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