Last month, researchers compared people in Italy and Spain who became very sick with Covid-19 to those who had only mild infections. The other is the Neanderthal segment on Chromosome 3. After the new batch of data came out on Monday, Dr. Zeberg decided to find out if the Chromosome 3 segment was passed down from Neanderthals. Once Neanderthal DNA entered our gene pool, it spread down through the generations, long after Neanderthals became extinct. As a result, Neanderthal genes became rarer, and many disappeared from our gene pool.

Source: International New York Times July 04, 2020 23:37 UTC