| geographic variability in expression of the sex-linked aat-1 gene of the bell-ring frog, buergeria buergeri. | cytological observation and artificial crossing experiments were used to examine the geographic differences in the sex-determining mechanism and mode of inheritance of the sex-linked aat-1 gene in the bell-ring frog, buergeria buergeri. the aat-1 phenotypes were also examined by allozyme analysis using field-caught females and males collected from 19 populations from the honshu, shikoku, and kyushu islands of japan, in order to comprehensively elucidate the geographic variability in the expressi ... | 2004 | 15054861 |