Not far from Camp David, the U.S. presidential retreat in Catoctin Mountain Park in Maryland, lies the remnants of an iron forge called Catoctin Furnace founded in the late 18th century, an important site for understanding the dawn of the Industrial Revolution in early U.S. history. The site now also is providing unique insight into African American history thanks to research involving DNA obtained from the remains of 27 individuals buried in a cemetery for enslaved people at Catoctin Furnace. The remains, held at the Smithsonian Institution since being excavated in the 1970s due to highway construction, were of 16 males and 11 females, ranging from infants to adults over age 60.
The course of human history has been marked by complex patterns of migration, isolation, and admixture, the latter a term that refers to gene flow between individuals from different populations.
Washington, May 19: Complex patterns of migration, isolation, and admixture a phrase used to describe the exchange of genes between members of various populations have characterised human history. As a result of the mixing of genetic lineages during admixture, populations genetic diversity increases. Ancient humans interbred with other hominin species, such as Neanderthals and Denisovans, in addition to current human populations.
The course of human history has been marked by complex patterns of migration, isolation, and admixture, the latter a term referring to the flow of genes