Presumptive Sry-negative XX sex reversal in a llama with multiple congenital anomalies.

  title={Presumptive Sry-negative XX sex reversal in a llama with multiple congenital anomalies.},
  author={Mark L Drew and Vicki N Meyers-Wallen and Gregory M. Acland and Cheryl L Guyer and Daniel Steinheimer},
  journal={Journal of the American Veterinary Medical Association},
  volume={215 8},
Multiple congenital abnormalities of the external genitalia consistent with XX sex reversal were detected in a juvenile llama. The llama had a typical female karyotype (74, XX) and did not have a Y chromosome, but a minute chromosome was detected. To determine whether a piece of Y chromosome containing the Sry gene might be located in a small translocation, DNA analysis by polymerase chain reaction was performed; the Sry gene was not detected. Histologic examination revealed ovarian tissue… CONTINUE READING


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