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.
This is used as a second language. Due to the multicultural composition of Qatar, numerous other dialects are also used in the country. These include Urdu, Balochi, Malayalam, Pashto, Hindi, Telugu, Tagalog, Tamil, Sinhalese, Nelapi, and Bengali. Some of these languages will be discussed in brief below.