generate questions: Genetic studies have found significant African female-mediated gene flow in Arab communities in the Arabian Peninsula and neighboring countries, with an average of 38% of maternal lineages in Yemen are of direct African descent, 16% in Oman-Qatar, and 10% in Saudi Arabia-United Arab Emirates.
How many people in Yemen have African lineage? {sep_token} How many people in Oman-Qatar have African lineage? {sep_token} How many people in Saudi Arabia-United Arab Emirates have African lineage? {sep_token} Genetic studies have found which gene in Arab communities?