Abstract
The locations of genes coding for 18S and 28S ribosomal RNA have been mapped on metaphase chromosomes of the Indian muntjac M. muntjak by in situ hybridization with (3H)rRNA from the toad X. laevis. The results show that, in the muntjac, rDNA clusters are associated with the prominent secondary constrictions on the X and the Y1 chromos. In addition a cluster of rDNA is found near the tip of one arm on the longest pair of autosomes. The autosomal cluster of rDNAs usually does not express as a secondary constriction at metaphase.
Full Text
The Full Text of this article is available as a PDF (698.0 KB).
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Caspersson T., Zech L., Johansson C., Modest E. J. Identification of human chromosomes by DNA-binding fluorescent agents. Chromosoma. 1970;30(2):215–227. doi: 10.1007/BF00282002. [DOI] [PubMed] [Google Scholar]
- Comings D. E. Heterochromatin of the Indian muntjac. Replication, condensation, DNA ultracentrifugation, fluorescent and heterochromatin staining. Exp Cell Res. 1971 Aug;67(2):441–460. doi: 10.1016/0014-4827(71)90430-7. [DOI] [PubMed] [Google Scholar]
- Henderson A. S., Warburton D., Atwood K. C. Localization of rDNA in the chromosome complement of the rhesus (Macaca mulatta). Chromosoma. 1974 Jan 29;44(4):367–370. doi: 10.1007/BF00284896. [DOI] [PubMed] [Google Scholar]
- Henderson A. S., Warburton D., Atwood K. C. Location of ribosomal DNA in the human chromosome complement. Proc Natl Acad Sci U S A. 1972 Nov;69(11):3394–3398. doi: 10.1073/pnas.69.11.3394. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Pardue M. L. Localization of repeated DNA sequences in Xenopus chromosomes. Cold Spring Harb Symp Quant Biol. 1974;38:475–482. doi: 10.1101/sqb.1974.038.01.051. [DOI] [PubMed] [Google Scholar]
- Seabright M. A rapid banding technique for human chromosomes. Lancet. 1971 Oct 30;2(7731):971–972. doi: 10.1016/s0140-6736(71)90287-x. [DOI] [PubMed] [Google Scholar]
- Sinclair J. H., Brown D. D. Retention of common nucleotide sequences in the ribosomal deoxyribonucleic acid of eukaryotes and some of their physical characteristics. Biochemistry. 1971 Jul 6;10(14):2761–2769. doi: 10.1021/bi00790a017. [DOI] [PubMed] [Google Scholar]
- Stefos K., Arrighi F. E. Heterochromatic nature of W chromosome in birds. Exp Cell Res. 1971 Sep;68(1):228–231. doi: 10.1016/0014-4827(71)90611-2. [DOI] [PubMed] [Google Scholar]
- Wurster D. H., Benirschke K. Indian muntjac, Muntiacus muntjak: a deer with a low diploid chromosome number. Science. 1970 Jun 12;168(3937):1364–1366. doi: 10.1126/science.168.3937.1364. [DOI] [PubMed] [Google Scholar]