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DNA数目C1与C2相同,S1与S2不同 遗传信息C1与C2相同,S1与S2不同 DNA数目C1与C2不同,S1与S2相同 遗传信息C1与C2不同,S1与S2相同
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benefited animals other than dogs served man helped other dogs contributed to medical knowledge
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DNA数目C1与C2相同,S1与S2不同 遗传信息C1与C2相同,S1与S2不同 DNA数目C1与C2不同,S1与S2相同 遗传信息C1与C2不同,S1与S2相同