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Gene expression takes place in two stages: the transcription of DNA to RNA by an enzyme called RNA polymerase, followed by the translation of this RNA into proteins, whose behavior affects the characteristics of each individual.
Biologists testing a mathematical model of the mechanism birds use to control the growth of complex feathers found that plumed feather structures involve the coordination of at least two genes that activate and that inhibit barb growth.
- Stoppage; cessation (of labor).
- A standing still or idling (of mills, factories, etc.).