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Ontonator | 2 years ago

Would the DNA testing have revealed whether or not they were related, or would the DNA have been too damaged to work that out? (Of course, even if they were not related, they were still not necessarily lovers.)

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eru|2 years ago

DNA is fairly fragile. I'm not sure about this particular case, but have a look at https://slate.com/technology/2013/02/dna-testing-richard-iii... for general timelines.

> What’s the shelf life of DNA?

> About a month to a million years, theoretically. The decay rate of DNA depends on the conditions of its storage and packaging. Above all, it depends on whether the DNA is exposed to heat, water, sunlight, and oxygen. If a body is left out in the sun and rain, its DNA will be useful for testing for only a few weeks. If it’s buried a few feet below the ground, the DNA will last about 1,000 to 10,000 years. If it’s frozen in Antarctic ice, it could last a few hundred thousand years. For best results, samples should be dried, vacuum-packed, and frozen at about -80 degrees Celsius. Even then, ambient radiation is likely to render DNA unrecognizable before it celebrates its millionth birthday.