To determine:
Any alternative hypotheses why researchers failed to recover any DNA from sediments that were more than
Concept introduction:
When a living organism dies, its DNA (deoxyribonucleic acid) degrades rapidly. However, in some special cases, DNA remains intact indefinitely. One way to preserve the genetic material is through freezing. Ancient DNA can be recovered from landscapes that once teemed with life, but have become permanently frozen since time immemorial. Researchers drove metal cylinders into the Siberian permafrost and were able to extract DNA of ancient plants.
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