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].
Bones are very busy even when you are sleeping at night. They are where blood cells are made and store most of your body's calcium. Bones are also very good at repairing themselves. In this lab you can explore the bones of the human skeleton using our skeleton viewer that can also be played as a game. You can also cut and peel apart a bone to look inside. For a closer look at bones you can use the virtual microscope to inspect their tiniest details. 1  Skeleton Viewer and Game. 2  Virtual Bone Dissection.