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joja [24]
3 years ago
5

Which form of genetic engineering was used by humans for many years before the discovery of DNA? A. Gene insertion. B. Selective

breeding C. Gene splicing D. Animal cloning.
Mathematics
1 answer:
erastova [34]3 years ago
7 0

I think it might’ve been selective breeding since that’s how corn was created way back then

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Step-by-step explanation:

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Step-by-step explanation:

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