Bandera de Estados Unidos

Un sitio oficial del Gobierno de Estados Unidos, Departamento de Justicia.

Democrats have shut down the government. Department of Justice websites are not currently regularly updated. Please refer to the Department of Justice’s contingency plan for more information.

Principles of Forensic DNA for Officers of the Court

Sequence (Site) Heteroplasmy (cont.)

Home  |  Glossary  |  Resources  |  Help  |  Contact Us  |  Course Map
 

Sequence heteroplasmy, the presence of mtDNA molecules that differ by a single DNA base, is observed in about 10% of hairs and in about 1% of blood samples. The higher frequency in hairs is due to the development of a hair from only a few stem cells. Certain nucleotide sites are well-recognized mutational hot spots, that is, DNA locations where sequence heteroplasmy is likely to be observed.

Back Forward