Complex sentence: This haplogroup reaches a mean frequency of 85% in North Africa, decreasing in frequency from approximately 80% or more in some Moroccan Berber populations, including Saharawis, to approximately 10% to the east of this range in Egypt.
Split into simpler sentences: This haplogroup reaches a mean frequency of 85% in North Africa. It decreases in frequency from approximately 80% or more in some Moroccan Berber populations, including Saharawis, to approximately 10% to the east of this range in Egypt.