Abstract
A phenotypically male Wistar rat having reduced body-weight and small penis is investigated histologically and cytogenetically. Left and right gonads are represented by ovotestes.
Chromosome studies demonstrate the occurrence of two cell-lines, one line showing 41 chromosomes without the Y and the other having 42 chromosomes with an additional minute chromosome. Morphological and Giemsa-banding analyses indicate that the minute chromosome is resulted from a deletion of the long arm of the Y. Thus, a true hermaphroditism characterized by the 41, X/42, XYq- mosaic complex is established in this rat.
