Mutations in the MT-CYB gene found in mitochondrial DNA can cause mitochondrial complex III deficiency. When caused by mutations in this gene, the condition is usually characterized by muscle weakness (myopathy) and pain, especially during exercise (exercise intolerance).
Hejazi Arabic, also known as Western Arabian Arabic, is a variant of the Arabic language spoken predominantly in the western region of Saudi Arabia. The language is spoken by approximately 8 million Saudi nationals, as of the last census.
Arabic is the official language of Mauritania; Fula, Soninke, and Wolof are recognized as national languages. The Moors speak á¸¤assÄniyyah Arabic, a dialect that draws most of its grammar from Arabic and uses a vocabulary of both Arabic and Arabized Amazigh words.