Given what we know, we can confirm that the seed companies are producing a new strain of tomatoes using artificial cross-pollination.
Cross-pollination is when pollen from one plant or flower is used to fertilize a different flower. This is what the companies are doing with the tomatoes. This is a process that tends to occur naturally, however, it is being forced to happen in this situation with the tomatoes in order to produce a tomato with specific desired traits.
Therefore, we can confirm that the seed companies are producing a new strain of tomatoes using artificial cross-pollination.
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