<h2>Answer:</h2>
Following are the four combinations of active or inactive regulatory proteins that could be present anytime in the cell:
- Active repressor , Active activator
- Active repressor, Inactive activator
- Inactive repressor, Active activator
- Inactive repressor, Inactive activator
Refuted. This happens, as explained in the question , when the result does not support the hypothesis.
Water travels from roots to leaves, where it is used for photosynthesis.
The vaccine was made in the past year, and the flu virus has mutated and grown resistant to this year's flu vaccine
