Could you describe half life here? So suppose the strands are now small snippets. If you find enough, couldnt you overlap common parts and eventually re-construct the full length?
It means half of the dna is destroyed every 500 years. After 65,000,000 years, you have 1/(2^130,000)th of the original DNA left, which is to say, none at all.
DNA half-life isn't an immutable property of the material like radioactive half-life is. The environment has an effect. The DNA in cryogenically preserved tissue should have a much longer half life.
It seems to depend mostly on temperature and moisture: dry, cold, and unchanging are best. We have good DNA from Deniovans because it was recovered from bones and teeth that sat buried in a cave in Siberia for 50k years.
Being in amber might protect from moisture, but I think the temperature and temperature swings would still likely destroy it within thousands of years.
Could you describe half life here? So suppose the strands are now small snippets. If you find enough, couldnt you overlap common parts and eventually re-construct the full length?