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Recombination: Sexual Reproduction in Plants: Self-Incompatibility as a Mechanism Promoting Outbreeding and Gene Flow

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Part of the book series: Progress in Botany/Fortschritte der Botanik ((BOTANY,volume 56))

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Abstract

The evolution of meiosis introduced an alternation between haploid and diploid phases into the life cycle of living organisms. With meiosis came the need to reestablish the diploid condition through fusion of two genetically distinct gametes (syngamy) each containing half of the parental genome scrambled during the recombinational processes leading up to meiotic division. The fusion of nuclei (karyogamy), following syngamy, can generate a basis for variation which natural selection can act upon only if the gametes involved originate from different individuals (Maynard Smith 1978). It is not surprising, therefore, that the majority of organisms show adaptations which favor fusion of gametes from different genetic backgrounds and, consequently, outbreeding (Jain 1976; Charlesworth and Charlesworth 1987; Jarne and Charlesworth 1993).

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© 1995 Springer-Verlag Berlin Heidelberg

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Hiscock, S.J., Kües, U., Stahl, U. (1995). Recombination: Sexual Reproduction in Plants: Self-Incompatibility as a Mechanism Promoting Outbreeding and Gene Flow. In: Behnke, HD., Lüttge, U., Esser, K., Kadereit, J.W., Runge, M. (eds) Progress in Botany. Progress in Botany/Fortschritte der Botanik, vol 56. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-79249-6_12

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  • DOI: https://doi.org/10.1007/978-3-642-79249-6_12

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-79251-9

  • Online ISBN: 978-3-642-79249-6

  • eBook Packages: Springer Book Archive

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