Question

Which of the following helps in screening for recombinant cells?

• A. Selection Marker such as antibiotic resistant gene
• B. A gene in plasmid that produced human protein
• C. A gene that would convert the glucose in the media to fructose
• D. All of the above

Answer 1

The correct option is A Selection Marker such as antibiotic resistant gene

Antiobiotic marker helps in the identification of the cells that have the recombinant DNA in it. The vector that carries the transgene also has a gene for antibiotic resistance that helps the recombinant cell to grow in the antibiotic rich media. Thus the non recombinant cells perish and the selection of recombinant cell is easy.