If cloned livestock could live as long as and be as healthy as offspring produced naturally, what would be the most significant scientific concern regarding cloning animals that are used as livestock?

Products from genetically engineered livestock may not be safe to consume.

Explanation:

Cloned organisms can be as healthy as natural animals, however we cannot asses the quality of the products produced from them like milk and meat. Since they are produced through an artificial system, therefore we cannot be certain that their products are safe for the consumption of humans or not and how they are going to interact with the already present genes in human beings. This is because the genes of cloned animals can interact with the genetic system of humans to cause diseases as well as some physiologically changed processes. Therefore, even if the cloned animals look as healthy as normal animals, there is still a risk of their consumption from scientific point of view and after the production of cloned animals, years of testing are required for their safe consumption.

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