Question

Assertion (A): The gene that encodes for Barnase is used to induce male sterility in transgenic plants.
Reason (R): Barnase is a RNA hydrolyzing enzyme that inhibits pollen formation in the tapetal cells of anther.

• A. Both Assertion (A) and Reason (R) are true and the Reason (R) is the correct explanation of the Assertion (A).
• B. Both Assertion (A) and Reason (R) are true, but the Reason (R) is not the correct explanation of the Assertion (A).
• C. Assertion (A) is true, but Reason (R) is false.
• D. Assertion (A) is false, but Reason (R) is true.

Hint:

To restore fertility in the F1 hybrid seeds, the male-sterile barnase plant is crossed with a male plant expressing the Barstar gene (also from B. amyloliquefaciens), which encodes a specific inhibitor of the Barnase ribonuclease.

Answer 1

The Correct Option is A