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Artificial Selection on Trichome Number

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Artificial Selection on Trichome Number


Artificial Selection on Trichome Number

This experiment draws on the ideas of natural selection—taking advantage of existing genetic diversity—but alters trait distribution at a much faster rate.

In a plant like rapeseed, Brassica rapus, two lines can be selected for different levels of trichomes—the number of protuberances, or hairiness. The number of trichomes on a plant leaf can naturally vary. Individuals with different amounts—on the extreme ends—can be separated, interbred, and examined after subsequent generations.

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