Chromosoma

, Volume 99, Issue 4, pp 243–250

A novel avian W chromosome DNA repeat sequence in the lesser black-backed gull (Larus fuscus)

  • Richard Griffiths
  • Peter W. H. Holland
Article

DOI: 10.1007/BF01731699

Cite this article as:
Griffiths, R. & Holland, P.W.H. Chromosoma (1990) 99: 243. doi:10.1007/BF01731699

Abstract

The phenol emulsion reassociation technique was used to isolate and clone a female specific, repetitive DNA sequence fromLarus fuscus. The repeat, designated P2000-17, is restricted to the W chromosome, although related sequences occur elsewhere in the genome ofL. fuscus. Similar sequences were detected in the genome of six other bird species from outside the genus Laridae, but the sequence occurs less frequently and to a similar extent in both sexes. The 298 bp DNA sequence of P2000-17 was determined and found to have extensive sequence identity to the rabbit dihydropyridine (DHP) receptor calcium channel. P2000-17 is represented once within a larger 8.6 kb tandem repeat (LfW-1), which has a complex internal DNA sequence. LfW-1 is highly conserved between repeat motifs and may comprise 3% of the female genome. The possible evolutionary origin of LfW-1 is discussed in relation to the repeat types found on the W and Y chromosomes of other species.

Copyright information

© Springer-Verlag 1990

Authors and Affiliations

  • Richard Griffiths
    • 1
  • Peter W. H. Holland
    • 1
  1. 1.Zoology DeptOxford UniversityOxfordUK

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