Incorporation of Tritiated Thymidine into Meiotic Chromosomes

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Science  28 Aug 1959:
Vol. 130, Issue 3374, pp. 503-504
DOI: 10.1126/science.130.3374.503


In pachytene nuclei of Melanoplus the heterochromatin of the sex chromosome was found to synthesize DNA at a different time than the autosomal euchromatin.