The association of non-homologous parts of chromosomes in the mid-prophase of meiosis in zea mays
Association of chromosomes at pachytene in Zea mays is 2-by-2 whether or not the parts associated are homologous.
Evidence for non-homologous association of parts of chromosomes has been obtained from monoploids, diploids, monosomics, trisomics, deficiencies, inversions, translocations, ring-shaped chromosomes, “asynaptic” plants and so-called “B-type” chromosomes.
In many cases, the non-homologous association at pachytene appears to be as intimate as homologous association.
Non-homologous association, present at pachytene, rarely continues into diakinesis.
Translocations probably result from the association of non-homologous parts of chromosomes.
KeywordsNormal Chromosome Spindle Fiber Univalent Chromosome Homologous Part Text Figure
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