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. 1983 Nov 25;11(22):7701–7716. doi: 10.1093/nar/11.22.7701

Scattering of repetitive DNA sequences in the albumin and vitellogenin gene loci of Xenopus laevis.

G U Ryffel, D B Muellener, S Gerber-Huber, T Wyler, W Wahli
PMCID: PMC326517  PMID: 6647035

Abstract

We have analyzed middle repetitive DNA in the albumin and vitellogenin gene families of Xenopus laevis. Mapping specific repetitive DNA sequences derived from introns of the A1 vitellogenin gene reveals that these sequences are scattered within and around the four vitellogenin genes (A1, A2, B1 and B2) and the two albumin genes (74 kd and 68 kd). Three repetitive DNA elements present in the A1 vitellogenin transcriptional unit are also located in introns of the 74 kd albumin gene. This apparently random distribution of middle repetitive DNA in the two gene families suggests that the analyzed sequences are not involved in gene regulation, but rather that they might represent unstable genetic elements. This hypothesis is further supported by the finding that size polymorphism in the A1 vitellogenin gene and in the 74 kd albumin gene is correlated with the presence or absence of repetitive DNA.

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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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