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. 1981 Sep;78(9):5744–5748. doi: 10.1073/pnas.78.9.5744

Human nucleolus organizers on nonhomologous chromosomes can share the same ribosomal gene variants.

M Krystal, P D'Eustachio, F H Ruddle, N Arnheim
PMCID: PMC348849  PMID: 6272316

Abstract

The distributions of three human ribosomal gene polymorphisms among individual chromosomes containing nucleolus organizers were analyzed by using mouse--human hybrid cells. Different nucleolus organizers can contain the same variant, suggesting the occurrence of genetic exchanges among ribosomal gene clusters on nonhomologous chromosomes. Such exchanges appear to occur less frequently in mice. This difference is discussed in terms of the nucleolar organization and chromosomal location of ribosomal gene clusters in humans and mice.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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