| 41. | Other examples of gravitropic mutants include those affecting the transport or response to the hormone auxin.
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| 42. | Apical dominance occurs because the shoot apical meristem produces auxin which prevents axillary buds from growing.
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| 43. | Several mathematical models making different assumptions on the way auxin influences PIN localisation explain different observations.
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| 44. | Some models assume PIN proteins polarize towards the neighbouring cell containing the highest cytosolic auxin concentration.
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| 45. | "' Fluroxypyr "'is an herbicide in the class of synthetic auxins.
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| 46. | In grafting, auxin promotes callus tissue formation, which joins the surfaces of the graft together.
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| 47. | To cause growth in the required domains, auxins must of necessity be active preferentially in them.
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| 48. | The " direct inhibition hypothesis " posits that these effects result from the cytokinin to auxin ratio.
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| 49. | This biotype was determined to have cross resistance to other auxin-like herbicides, especially clopyralid.
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| 50. | As a result, the PIN proteins generate a directional flow of auxin at the cellular scale.
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