• 2022-06-03
    In the process of cloning cattle, the nucleus of an ovum of cattle A was removed, and the nucleus of ear marginal cell of cattle B (male) was taken out and implanted into the enucleated ovum of cattle A and transplanted into the uterus of cattle C. The cloned cow will be male.
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      Inpastoralareas,cattle,sheeporotherlivestockareoftensenttothebride'sfamilyasbetrothalgifts.(1.0分)1.0分

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      (词汇) The cattle were being fattened up for ______.

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      6.There are cattle in the fields, but we sit down to beef.

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      And really it was like watching a ______ of cattle to see the long column,

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      The clearing of trees today is evidently attributed to cattle grazing because of ______.