Question

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Answer 1

Answer:

periods, dating all the way back to 50,000 years ago. Then, they compared these genes to modern variants that we know cause disease to see how "genetically healthy" each sample was. While they found that individuals from tens of thousands of years ago were genetically sicker than we are, those who lived in the last thousand years actually had healthier genomes than modern humans.

Before you get too alarmed, it's important to put this into context. If an ancient human suffered from nearsightedness, a pollen allergy, and irritable bowel syndrome, they likely wouldn't survive to bear children. But modern advancements make it possible for people today to have all of those conditions and still meet a mate, have children, and live a long, healthy life. And that's just diseases we know have genetic variants: It's possible that these ancient DNA samples contained genes for diseases we can't identify since they were stripped from our genomes as sufferers dropped out of the family tree. That would skew the results and make these recent ancients appear healthier.

Answer 2

Answer:

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