Plasmid Conjugation (IMAGE) Duke University Caption This movie depicts the basic process of antibiotic resistance spreading through plasmid conjugation, otherwise known as horizontal gene transfer. Two strains of bacteria are grown together for four hours. One strain appears red and carries resistance to one type of antibiotic, while the other carries mobile genes that appear green and provide resistance to another antibiotic. After both antibiotics are applied, the red bacteria that have received the green resistance genes appear yellow and take over the culture because they are resistant to both antibiotics. Credit Allison Lopatkin, Duke University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.