Miscarriage is the most common type of pregnancy loss before the 20th week of pregnancy. Learn about the types of miscarriage, risk factors, symptoms, and diagnosis. Miscarriage is the most common type of pregnancy loss before the 20th week of pregnancy. Learn about the types of miscarriage, risk factors, symptoms, and diagnosis. Search
One shows a North-South re-mix, and the other a West-East re-mix. In the North-South re-mix, it looks like there was some back-migration from South America northwards, and this is reflected in the genomes of Central American Chibchan-speakers, which contains DNA from two widely separated strands of Native ancestry.
This has led to speculation that perhaps the first Americans and Native Americans came from different homelands, Chatters continues, or migrated from Asia at different stages in their evolution. The newly discovered skeletonânamed Naia by the divers who discovered her, after the Greek for waterâshould help to settle this speculation.