F+ cell

Definition

An F+ cell is a bacterial cell that contains the F (fertility) plasmid, which allows it to form a conjugation pilus and transfer genetic material to an F- cell. This process contributes to genetic diversity in bacterial populations.

5 Must Know Facts For Your Next Test

1. The F+ cell initiates the process of bacterial conjugation with an F- cell.
2. The F plasmid carries genes that encode for the formation of a sex pilus.
3. Conjugation between an F+ and an F- cell results in both cells becoming F+ cells.
4. F+ cells can transfer not only the F plasmid but also other genetic material if integrated into the chromosome.
5. The presence of the F plasmid gives the host bacterium certain advantages, such as antibiotic resistance.

Review Questions

• What is the primary function of an F+ cell in bacterial conjugation?
• How does an F+ cell differ from an Hfr cell?
• What happens to the recipient cell after conjugation with an F+ cell?

Related terms

F- Cell: A bacterial cell lacking the fertility plasmid, which can receive genetic material from an F+ cell.

Hfr Cell: A bacterium with the fertility plasmid integrated into its chromosomal DNA, allowing high-frequency recombination.

Sex Pilus: A protein structure encoded by genes on the fertility plasmid that enables direct transfer of DNA between bacteria during conjugation.