Abstract
IT has previously been reported that in several Polypodiaceous ferns the chromatin of the egg stains progressively less intensely with the Feulgen reagent as the egg matures1. In the mature fixed egg a clear area is visible in the centre in a position corresponding with that earlier occupied by the nucleus; but it is impossible to identify any staining with certainty or any sharp boundary to the clear area. The condition of the deoxyribonucleic acid in these eggs raises a problem of considerable genetical and cytochemical interest. A similar condition has been reported in the eggs of some angiosperms2 and animals3.
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References
Vazart, J., C. R. Acad. Sci. Paris, 235, 316 (1952). Bell, P. R., J. Linn. Soc. (Bot.), 56, 188 (1959).
Krupko, S., and Denley, A., Nature, 177, 92 (1956).
Brachet, J., “Biochemical Cytology” (New York, 1957).
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BELL, P. Deoxyribonucleic Acid in Eggs of the Polypodiaceous Ferns. Nature 184, 1664 (1959). https://doi.org/10.1038/1841664a0
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DOI: https://doi.org/10.1038/1841664a0
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