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Sry‐negative XX sex reversal in the American cocker spaniel dog by V. N. Meyers‐Wallen; V. L. Palmer; G. M. Acland; B. Hershfield is a Medicine article available to read on EtoBox.

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## Abstract The Sry gene product serves an important function in male sex determination through testis induction. However, testicular development has been reported in SRY‐negative XX sex reversed humans. XX sex reversal of the American cocker spaniel, inherited as an autosomal recessive trait, may be a homolog of this disorder. The purpose of this study was to determine whether the Sry high mobility group (HMG) box is present in genomic DNA of affected dogs. Conserved Sry HMG box and hypoxanthine phosphoribosyltransferase (HPRT) sequences were used as primers in polymerase chain reactions. A 167 bp Y‐specific canine Sry HMG box sequence was cloned from genomic DNA of normal male dogs. Internal primers generated a 104 bp Sry HMG box product from normal males, but not from females or XX sex reversed dogs. Parallel reactions generated an HPRT product from all dogs. Results indicate that the Sry HMG box is absent in genomic DNA of XX sex reversed dogs. We speculate that activation of the testis differentiation cascade in the absence of Sry in this model is due to a mutant autosomal gene. © 1995 Wiley‐Liss, Inc.

Who reads Sry‐negative XX sex reversal in the American cocker spaniel dog?

Author

V. N. Meyers‐Wallen; V. L. Palmer; G. M. Acland; B. Hershfield

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 1040-452X)

Published

1995

Language

EN

Field

Medicine (Life Sciences)