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      Question

      Which cotton species is recognized as "American cotton"

      or "Upland cotton" and has an allelotetraploid chromosome number?
      A Gossypium arboreum Correct Answer Incorrect Answer
      B Gossypium herbaceum Correct Answer Incorrect Answer
      C Gossypium hirsutum Correct Answer Incorrect Answer
      D Gossypium barbadense Correct Answer Incorrect Answer

      Solution

      Explanation:  Gossypium hirsutum is commonly known as "American cotton" or "Upland cotton" and has an allelotetraploid chromosome number of 2n=4x=52. Its fiber length ranges from 18.0 to 23.0.

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