How old is the Rh positive genetic marker? How do scientists ascertain the age of this marker?
The Rh positive genetic marker, part of the Rh blood group system, has been studied for nearly a century since its recognition 1 . The exact age of the Rh positive marker is not specified in the literature, but the Rh blood group system itself was discovered in the early 20th century 2 . Scientists determine the age of genetic markers like the Rh factor by examining mutations and their frequencies in different populations, using molecular clock techniques. This involves comparing DNA sequences from different individuals to estimate how long it has been since they shared a common ancestor. Additionally, they may use databases and computational approaches to analyze genetic variations and trace their origins 3 . For example, DNA methylation patterns can serve as biomarkers to estimate the biological age of tissues and are used in aging research to understand age-related changes at the genetic level 4 . These methods are part of a broader field of study that includes genomics,...
