A breeder wanted to develop a new variety of potatoes that produces more of the vitamins found in the roots of carrots than in typical potatoes. What method of selective breeding would the breeder most likely use?

Carrots and potatoes are different species, so crossing them through hand pollination or hybridization would not reliably transfer the carrot trait. Genetic engineering can introduce genes that increase vitamin production into the potato, making it the most likely method. Inbreeding mainly preserves traits already present in a population.

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