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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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