Question

In genetic engineering, the antibiotics are used ___________.

• A. As selectable markers
• B. To select healthy vectors
• C. As sequence from where replication starts
• D. To keep the cultures free of infection
• E. Both A and D

Answer 1

The correct option is A As selectable markers

In genetic engineering the selectable markers help us to select the cells that have lost the antibiotic genes associated with a specific antibiotic resistance after inserting the insert DNA among the group of wild type cells.

So the correct answer is "As selectable markers".