Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The exchange of genetic material between homologous chromosomes that occurs during meiosis and contributes to genetic variability.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. Present participle of cross over.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the interchange of sections between pairing homologous chromosomes during the prophase of meiosis

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