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- Flowering at the right age: Alpine rock cress uses a ribonucleic acid to measure its age and tell when it's the right ...
Perennial plants flower only when they have reached a certain age and been subjected to the cold. These two circumstances prevent the plant from starting to flower during winter. Botanists have now discovered that the Alpine rock cress determines its age based on the quantity of a short ribonucleic acid.
June 10, 2013 - Science Daily