(B) Heterosis, also known as $Hybrid \text{ } vigor$, is the phenomenon where the progeny of a cross between two genetically distinct parents exhibits

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(B) Heterosis, also known as $Hybrid \text{ } vigor$, is the phenomenon where the progeny of a cross between two genetically distinct parents exhibits superior traits compared to both parents. This includes increased growth rate, biomass, and fertility. It is a fundamental concept in plant and animal breeding to improve productivity.