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This is my question as well. How do they know that these DNA samples are not of the people who prepared and/or maintained the casts?
by __rito__ 2y ago
This is my question as well. How do they know that these DNA samples are not of the people who prepared and/or maintained the casts?
- valarauko 2y agoThere are a couple of ways to rule out modern contamination. Ancient DNA has certain characteristic damage that changes the sequence slightly, and you can use that to filter out any DNA that doesn't have that signature. Plus, you can maintain DNA profiles of all people involved in handling to ensure it's not modern contamination from the field workers or lab techs.
- __rito__ 2y agoThese makes sense. Thanks for clarifying. 3 people downvoted me for the honest question.