#Question id: 24144
#General Aptitude
#Question id: 19690
#Unit 13. Methods in Biology
#Question id: 7311
#Unit 5. Developmental Biology
According to the ABC model of flower development in Arabidopsis, three classes of organ identity genes— designated A, B, and C— are required to specify the identity of floral organs in each whorl of a flower. If wild type Arabidopsis were transformed with a chimeric gene composed of a C class promoter fused to a B class coding sequence, which of the following arrangements (outer to inner) would be predicted?
#Question id: 14476
#Unit 13. Methods in Biology
#Question id: 4949
#Unit 11. Evolution and Behavior
What probably accounts for the switch to DNA-based genetic systems during the evolution of life on Earth?