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.
By Just Landed. The official language in Bahrain, similar to most Arabic-speaking countries, is Literary Arabic. A mixture of Classic Arabic and Modern Standard Arabic mixed with local dialects. Classic Arabic (CA) is the language in which the Qur'an, the Holy Book of Islam, is written.