- Insertional inactivation allows for direct identification of recombinant colonies, as the disrupted gene leads to observable changes (e.g., loss of color or enzyme activity).
- It avoids the use of antibiotics, promoting biosafety.
If vector \( \mathbf{a} = 3 \hat{i} + 2 \hat{j} - \hat{k} \) \text{ and } \( \mathbf{b} = \hat{i} - \hat{j} + \hat{k} \), then which of the following is correct?