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].
1 Bone marrow is the spongy tissue and fluid which is inside some of the larger bones in the body. 2  The marrow is where you make red blood cells, white blood cells, and platelets from cells called 'stem cells'. 3  A biopsy is where a small sample of tissue is removed from a part of the body. bone marrow biopsy is a procedure where a sample of tissue is taken from the inside of a bone. Note: the information below is a general guide only.