Intra‐individual length heterogeneity of Rana esculenta mitochondrial DNA

Abstract
Mitochondrial DNA extracted from R. esculenta oocytes appears heterogeneous in size. The length of these molecules varies continuously from 19,700 bp [base pair] to 19,700 bp. Each animal is heteroplasmic and can be characterized by the range of the variation (400-700 bp) and the extreme sizes of the various molecules it carries. The variable region of the genome was localized between the coding region and the replication origin area.