MCQ
The genes causing cancer are:
- ARegulatory genes.
- BExpressor genes.
- COncogenes.
- DStructural genes.
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Statement $I$ : Bt toxins are insect group specific and coded by a gene cry $IAc$.
Statement $II$ : Bt toxin exists as inactive protoxin in B. thuringiensis. However, after ingestion by the insect the inactive protoxin gets converted into active form due to acidic $\mathrm{pH}$ of the insect gut.
In the light of the above statements, choose the correct answer from the options given below:
| Column $I$ | Column $II$ |
| $A$. Recombinant $DNA$ | $1$. Sea weeds |
| $B$. Gel electrophoresis | $2$. DNA staining |
| $C$. Ethidium bromide | $3$. Plasmid DNA that hasincorporated human DNA |
| $D$. Agarose | $4$. Process by which DNA fragments are separated based on their size |
Choose the correct option $A$ and $B$