A: A blood moon is a deep reddening of the moon caused by the Earth passing between the moon and the sun. During the period of the eclipse, light from the sun... Full Answer >
Sometimes, bones are the only accessible source of DNA, thanks to their structure, which preserves DNA comparatively well and for a long time. The main problems of DNA extraction from bones are DNA degradation due to environmental factors and the presence of soil-derived inhibitors like humus acids [1â10].
DNA is found in most cells of the body, including white blood cells, semen, hair roots and body tissue. Traces of DNA can be detected in body fluids such as saliva and perspiration. Mitochondrial DNA, which follows the maternal line of an individual, can be extracted from hair and bone samples.