Question

Flower organ pattern formation is specified by the A B and C genes in arabidopsis. A gene alone makes sepal, A and B together make petal, B and C together make stamen. And C alone makes carpel. If you want to generate a novel plant which does not have anthers (so that no pollen is produced to cause allergy) but the three other floral organs are still in tact, which of the following is the best strategy?

A. Inactivate gene B

B. Inactivate gene C

C. Replace C with A in the whorl of stamen only

D. Inactivate both B and C

E. None of the above