Question: what is the reference when the strain is MSB8?
SQL: SELECT "Reference" FROM "2-11664498-20" WHERE "Strain" = 'MSB8';

Question: what is the average genes when the reference is 2009 and the strain is RKU-1?
SQL: SELECT AVG("Genes") FROM "2-11664498-20" WHERE "Reference" = '2009' AND "Strain" = 'RKU-1';