Color Plot (IMAGE) University of Leicester Caption A color plot showing the expression level during the day in early (larks) and late (owls) strains of Drosophila. Purple colour represents an expression level above mean, bright green colour represents expression lower than the mean. Each row represents a different gene. Marked difference between the early and the late strains are clearly visible. Credit University of Leicester Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.