Question

Give the names of any three genes that are used as selectable markers in recombinant DNA technology. Also mention the trait/protein they specify.

Hint:

Remember that selectable marker genes are useful tools in recombinant technology, and try to know the particular trait/protein associated with them.

Answer 1

Ampicillin resistance gene: Encodes a protein conferring resistance to ampicillin, providing a selective advantage in ampicillin presence. Lac Z gene: Encodes beta-galactosidase, an enzyme essential for lactose breakdown. GFP gene: Encodes Green Fluorescent Protein, which fluoresces green under UV light. Tetracycline resistance gene: Confers resistance to tetracycline. Leu 2 gene: A marker gene encoding an enzyme for leucine synthesis.