Stem cells of Arabidopsis thaliana. (IMAGE)
Caption
This image shows flower buds forming from the stem cells of Arabidopsis thaliana. To show how randomly the gene DR5 is turned on, researchers used two identical copies of the gene—one glowing blue, the other yellow. In some cells, both are active (appearing white), while others show only blue or only yellow, highlighting the randomness. Still, DR5 is generally active where the hormone auxin tells it to be. All cell nuclei are marked in magenta.
Credit
Image credit: Shuyao Kong.
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