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bud |
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budUndeveloped shoot usually enclosed by protective scales; inside is a very short stem and numerous undeveloped leaves, or flower parts, or both. Terminal buds are found at the tips of shoots, while axillary buds develop in the axils of the leaves, often remaining dormant unless the terminal bud is removed or damaged. Adventitious buds may be produced anywhere on the plant, their formation sometimes stimulated by an injury, such as that caused by pruning. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The process takes 30 seconds, but a fluke burrowed in a tadpole's limb bud can cause an extra leg to sprout. In the developing limb bud of the arm, for example, HoxA genes at one end of the chromosome turn on first, marking cells intended for the upper arm. Most of the tissues differentiating in the newly formed limb bud arise from mesenchymal cells. |
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