Origin of an apparent B chromosome by mutation, chromosome fragmentation and specific DNA sequence amplification

@article{Dhar2002OriginOA,
  title={Origin of an apparent B chromosome by mutation, chromosome fragmentation and specific DNA sequence amplification},
  author={Manoj Kumar Dhar and Bernd Friebe and Awtar Kishen Koul and Bikram S. Gill},
  journal={Chromosoma},
  year={2002},
  volume={111},
  pages={332-340}
}
The present study documents the de novo origin of an apparent B chromosome in Plantago lagopus. The origin was associated with mutation (aneuploidy), chromosome fragmentation, specific DNA sequence amplification, addition of telomeric repeats, and centromeric misdivision. It originated in the progeny of trisome 2, from the excision of 5S rDNA and 18S, 5.8S, 25S rDNA sequences located on chromosome 2, and within a few generations acquired many characteristics of an apparent B chromosome. The B… CONTINUE READING

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