| evidence for heteromorphic sex chromosomes in males of rana tagoi and rana sakuraii in nishitama district of tokyo (anura: ranidae). | karyotypes of the tago brown frog rana tagoi and stream tago brown frog rana sakuraii from a mountain region in the nishitama district in tokyo were examined by conventional giemsa staining, c-banding and late replication (lr)-banding. chromosome number was 2n = 26 in all cases. the 26 chromosomes consisted of five (1-5) pairs of large chromosomes and eight (6-13) pairs of small chromosomes. chromosome 10 had a secondary constriction on the long arm. in all frogs, on chromosome pair 8, the xx/xy ... | 1999 | 10219730 |