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Cited by 450

The DOI matches its Crossref record; 34 of the 34 references it cites were found in a registry or an index.

Molecular evidence for genetic exchanges among ribosomal genes on nonhomologous chromosomes in man and apes.

Open access
Arnheim, N, Krystal, M, Schmickel, R, Wilson, G, Ryder, O, Zimmer, E·1980·Proceedings of the National Academy of Sciences

Abstract

We have found that human and ape ribosomal genes undergo concerted evolution involving genetic exchanges among nucleolus organizers on nonhomologous chromosomes. This conclusion is based upon restriction enzyme analysis of the ribosomal gene families in man and five ape species. Certain structural features were found to differ among (but not within) species even though the ribosomal genes have a multichromosomal distribution. Genetic exchanges among nucleolus organizer regions may be related to the well-known phenomenon of acrocentric chromosome associations observed in man and apes. Length variation in a region of the nontranscribed spacer was found in both chimpanzee species we examined. The nature of this length variation was found to be identical to that previously described in man. The origin of the length variation and its polymorphism within these three species might be explained by unequal alignment and unequal cross-over among the ribosomal genes. An especially surprising finding was a nucleotide sequence polymorphism present in each individual human and ape we examined. Some ribosomal genes of each individual have a HindII site in the 28S gene about 800 base pairs from the EcoRI site in this gene. The remaining 28S genes lack this HindII site. The presence of this polymorphism within individuals of every species we examined suggests that it has been maintained by natural selection.

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Metadata

Authors
Arnheim, N., Krystal, M., Schmickel, R., Wilson, G., Ryder, O., & Zimmer, E.
Venue
Proceedings of the National Academy of Sciences
Published
1980-12
Volume
77
Issue
12
Pages
7323-7327
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2041854849
Cited by
450
References
34
FWCI
32.78
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Molecular evidence for genetic exchanges among ribosomal genes on nonhomologous chromosomes in man and apes. https://app.cochat.ai/papers/10.1073/pnas.77.12.7323
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Arnheim, N., Krystal, M., Schmickel, R., Wilson, G., Ryder, O., & Zimmer, E. (1980). Molecular evidence for genetic exchanges among ribosomal genes on nonhomologous chromosomes in man and apes. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.77.12.7323

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