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(A) The phenomenon where the offspring of a cross between two genetically distinct individuals or lineages exhibit superior traits (such as increased

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Hybrid vigor

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(A) The phenomenon where the offspring of a cross between two genetically distinct individuals or lineages exhibit superior traits (such as increased growth, yield, or fertility) compared to their parents is known as $Hybrid 	ext{ } vigor$ or $Heterosis$. This occurs due to the masking of deleterious recessive alleles by dominant alleles and the accumulation of favorable dominant alleles in the $F_1$ hybrid.

When two genetically different individuals or lineages are crossed, the $F_1$ generation often displays superior traits compared to both parents. This phenomenon is called .....

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