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The Attractions of the Ends of Chromosomes in Trivalents and Quadrivalents

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Abstract

I HAVE lately investigated the chromosome configurations at the metaphase of the first division in the pollen mother-cells of about sixty species and varieties of plants (including triploids, tetraploids, and 2n + 1 forms). The method used guaranteed perfect fixation, and the homologous chromosomes were usually clearly distinguishable at the metaphase. The following facts have been observed (omitting those few plants in which the pairs of chromosomes at the reduction metaphase were joined elsewhere than at the ends):

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  1. Carnegie Institution of Washington, Cold Spring Harbor, N.Y.

    JOHN BELLING

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  1. JOHN BELLING
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BELLING, J. The Attractions of the Ends of Chromosomes in Trivalents and Quadrivalents. Nature 118, 227–228 (1926). https://doi.org/10.1038/118227a0

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