accessory chromosome


Definition of accessory chromosome

1 : a sex chromosome specifically : an X chromosome that is solitary and unpaired in one sex (as in certain insects)
2 : b chromosome

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First Known Use of accessory chromosome

1899, in the meaning defined at sense 1

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The first known use of accessory chromosome was in 1899

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Cite this Entry

“Accessory chromosome.” Dictionary, Merriam-Webster, Accessed 14 Aug. 2020.

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