Abstract
The distribution of distances between homologous chromosomes in root tip cells of Avena sativa was studied in synaptic and asynaptic genotypes. The distances between homologous chromosomes were smaller than that calculated for two randomly distributed chromosomes, while non-homologous chromosomes did not deviate from the random theoretical distribution. The distances between homologous chromosomes in the asynaptic genotype were significantly greater than in synaptic plants. The loose association of homologous chromosomes in somatic tissue is correlated with the failure of chromosome pairing at meiosis in asynaptic plants.
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