/sci/ - Science & Math » Thread #12352715

1MiB, 540x960, fucking_americans.webm

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Anonymous Tue 17 Nov 04:03:00 2020 No.12352715 View Reply Original Report

Quoted By: >>12352976 >>12353120

What do paleontologists mean when they say dna can only last 20k years?
What does the DNA look like beyond that point? Broken up? Fossilized?

Anonymous

Anonymous Tue 17 Nov 2020 04:58:01 No.12352976 Report

Quoted By: >>12353313

>>12352715
The decay path of dna in sediment is to become a mix of silica-phosphate oxide crystals, amines and branching unsaturated fatty acids. The half life under minimal pressure is about three thousand years, so 20,000 years is about the time it takes for nothing to be left.

Anonymous

Anonymous Tue 17 Nov 2020 05:26:24 No.12353120 Report

Quoted By:

>>12352715
>fucking_americans.webm
>video is clearly in Sunderland, UK

Anonymous

Anonymous Tue 17 Nov 2020 06:06:30 No.12353313 Report

Quoted By: >>12353468

>>12352976
does this mean that 20,000 years is the upper limit on a human lifetime even if a “cure for aging” is developed by regenerating telomeres?

Anonymous

Anonymous Tue 17 Nov 2020 06:36:27 No.12353468 Report

Quoted By:

>>12353313
I think no, for the same reason that we live for 80 years despite a human body decomposing in weeks

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