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].
Of all the DNA we carry around, about 1% of it is human. The other DNA belongs to the 100,000 billion microbes that hang out in our gut, among other places. Many are bacteria that take advantage of the protection and food we offer them while making vitamins or metabolites we might find handy.