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 located in biological substances, including saliva, semen, blood, sweat, mucus, skin, and even ear wax. DNA can also be located in vomit and fecal matter. In light of this, a career as a DNA analyst is definitely not for the squeamish.