XY females in Microtus cabrerae (Rodentia, Microtidae): a case of possibly Y-linked sex reversal.
Microtus cabrerae is a species with blocks of heterochromatin on both sex chromosomes. Polymorphism caused by extensive deletions affecting these heterochromatic segments exists in both X and Y chromosomes. Of a total of 22 males and 22 females studied, four females exhibited sex pair dimorphism similar to that observed in males. C-banding techniques and preliminary data regarding inheritance support the hypothesis that these specimens are XY fertile females and that this sex reversion is most likely inherited through the Y chromosome of these females.
Burgos
M
M
Departamento de Biología Animal, Ecología y Genética, Facultad de Ciencias, Universidad de Granada, Spain.
Jiménez
R
R
Díaz de la Guardia
R
R
D000818:Animals; D003411:Arvicolinae / Q000235:genetics*; D005260:Female; D008040:Genetic Linkage; D006182:H-Y Antigen / Q000235:genetics; D007621:Karyotyping; D008297:Male; D012732:Sex Determination Analysis; D014960:X Chromosome; D014998:Y Chromosome
D006182:H-Y Antigen