Original sentence: It is colloquially referred to as the "Berber marker" for its prevalence among Mozabite, Moyen Atlas, Kabyle and other Amazigh groups, E-M81 is less common among North African Arab groups.It is thought to have originated in the area of east  Africa 5,600 years ago.It reaches frequencies of up to 80% in the Mzab
Edited sentence: It is colloquially referred to as the "Berber marker" for its prevalence among Mozabite, Moyen Atlas, Kabyle and other Amazigh groups, E-M81 is also quite common among North African Arab groups.It is thought to have originated in the area of North Africa 5,600 years ago.It reaches frequencies of up to 80% in the Maghreb