F Factor

**Definition:** A plasmid whose presence in the cell, either extrachromosomal or integrated into the BACTERIAL CHROMOSOME, determines the sex of the bacterium, host chromosome mobilization, transfer via conjugation (CONJUGATION, GENETIC) of genetic material, and the formation of SEX PILI.

**Tree numbers:** - G05.360.600.300

**Synonyms:** - Sex Factor F - Bacterial Sex Factor - Bacterial Sex Factors - Factor, Bacterial Sex - Factors, Bacterial Sex - Sex Factors, Bacterial - Sex Factor, Bacterial - Fertility Factor, Bacterial - F Plasmids - Resistance Transfer Factor - F Plasmid