Question

The anticoagulant hirudin is obtained from

• A. Ti plasmid of Agrobacterium
• B. Bt toxin produced by cry gene
• C. Seeds of Brassica napus
• D. All of the above

Answer 1

The correct option is C Seeds of Brassica napus

A. Ti plasmid of Agrobacterium is used in genetic transformation of plant cells.

B. Bt toxin is produced by the cry gene in bacterium Bacillus thuringiensis. This gene has been incorporated in many plants to produce Bt crops which are resistant to pests.

C. Seeds of Brassica napus are used in the production of recombinant hirudin. It is a protein that has anticoagulant property. This protein is produced by leech. The gene encoding for this protein has been isolated and incorporated into Brassica napus. The protein is then isolated from the seeds of Brassica napus.

So, the correct answer is 'Seeds of Brassica napus'.