Differential replication of ribosomal gene repeats in polytene nuclei of Drosophila.

@article{Endow1979DifferentialRO,
  title={Differential replication of ribosomal gene repeats in polytene nuclei of Drosophila.},
  author={Sharyn Anne Endow and David M Glover},
  journal={Cell},
  year={1979},
  volume={17 3},
  pages={597-605}
}
The genes coding for the 18S and 28S rRNAs in D. melanogaster were examined using Southern transfers of DNA from diploid or polytene tissue. A ribosomal gene repeat 12 kb in length is present in DNA from diploid tissue of males and is the major repeat on the Y chromosome. This repeat is present in low amounts on the X chromosome, which contains major repeats of 17 and 11.5 kb. In polytene nuclei of males, the 12 kb band is disproportionately replicated, and only a very low amount of the 11.5 kb… CONTINUE READING