MCQ
Purines of $DNA$ are represented by
- AUracil and thymine
- ✓Guanine and adenine
- CUracil and cytocine
- DThymine and cytocine
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

$(a)\; DNA$ is negatively charged molecule and so it is loaded on gel towards the Anode terminal
$(b) \;DNA$ fragments travel along the surface of the gel whose concentration does not affect movement of $DNA.$
$(c)$ Smaller the size of $DNA$ fragment larger is the distance it travels through it.
$(d)$ Pure $DNA$ can be visualized directly by exposing UV radiation.
Choose correct answer from the options given below