Table: bacterial_genomes_2
Columns: species
strain
type
base_pairs
genes

Question: Which species of bacteria has 5,566 genes?
SQL: SELECT "strain" FROM bacterial_genomes_2 WHERE "genes" = '5,566'

Question: What is the Strain name of Species Thiomicrospira crunogena?
SQL: SELECT "strain" FROM bacterial_genomes_2 WHERE "species" = 'thiomicrospira crunogena'