Optional introns in mitochondrial DNA of Podospora anserina are the primary source of observed size polymorphisms.

@article{Salvo1998OptionalII,
  title={Optional introns in mitochondrial DNA of Podospora anserina are the primary source of observed size polymorphisms.},
  author={Jeza Salvo and B Rodeghier and Adrienne Rubin and T Troischt},
  journal={Fungal genetics and biology : FG & B},
  year={1998},
  volume={23 2},
  pages={162-8}
}
The significant differences in mitochondrial genome size among seven races (B, E, M, T, U, W, and Y) of Podospora anserina have been found to be primarily due to the presence and/or absence of introns, including four introns not previously known to be optional. Information from physical mapping of races M and T, and sequence data from races A and s, was used to identify regions likely to contain insertions or deletions, which were then characterized using PCR and sequence analysis. Newly… CONTINUE READING