Suppose Lettuce Seeds Are Exposed to a Series of Alternating

question 18

Multiple Choice

Suppose lettuce seeds are exposed to a series of alternating flashes of red light (abbreviated R) and far-red light (abbreviated FR) .(E.g., a flash of red light followed by a flash of far-red light is denoted as R→RF.) Which of the following series of flashes would result in the germination of those seeds?

• A)FR only
• B)R→FR
• C)R→FR →R→FR
• D)R →FR→R→FR→R
• E)R→FR→R→FR→R→FR

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