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远交衰退(Outbreeding depression),又称杂种衰败杂种衰退(Hybrid breakdown),是演化生物学中指不同种群之间的后代比同种群的后代有劣势的现象,与杂种优势相反。这是配子后生殖隔离的表现。[1]

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成因

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参考资料

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