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Science 26 February 1965:
Vol. 147. no. 3661, pp. 1041 - 1043
DOI: 10.1126/science.147.3661.1041
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Articles

X Chromosome DNA Replication: Developmental Shift from Synchrony to Asynchrony

R. Bruce Nicklas 1 and Richard A. Jaqua 1

1 Department of Biology, Yale University, New Haven, Connecticut

The X chromosome in Melanoplus differentialis is negatively heteropycnotic in the early spermatogonial cell generations but positively heteropycnotic in the final premeiotic interphase. Autoradiography after administration of tritiated thymidine reveals that this condensation change is paralleled by a change in the time of DNA replication in the X chromosome relative to that in the autosomes.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
The Temporal Order of Replication of Some DNA Cistrons.
I. Balazs, E. H. Brown, and C. L. Schildkraut (1974)
Cold Spring Harb Symp Quant Biol 38, 239-245
   Abstract »    PDF »
Late DNA Replication in Male Mouse Meiotic Chromosomes.
N. Odartchenko and M. Pavillard (1970)
Science 167, 1133-1134
   Abstract »    PDF »


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