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wood prints nature wood prints still life wood prints flowers still life wood prints flower wood prints petal wood prints petals wood prints colour wood prints colouration wood prints genetics wood prints biotechnology wood prints plant wood prints botany wood prints breaking wood prints switching wood prints jumping genes wood prints

photographs nature photos still life photos flowers still life photos flower photos petal photos petals photos colour photos colouration photos genetics photos biotechnology photos plant photos botany photos breaking photos switching photos jumping genes photos

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Petal colour breaking. Flower of the garden Dahlia (Dahlia sp.) showing the effect of genetics on petal colour. A gene controlling magenta flower colour has been turned on" in part of the flowerhead while it is "switched off" and white in other parts. The flower develops from a small number of cells and depending on when the gene was "turned on" during flower development leads to a smaller or larger part of the plant gaining colour. Shorter duration "on" then "off" gene switching can create streaks or small islands of colour on white petals. Genetic mutations may be induced by 'jumping genes' that move around in the plant's DNA."

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