WATSON AND CRICKS MODEL OF DNA.

1-      DOUBLE HELICAL STRUCTURE.

2-      NITROGENOUS BIASES ARE LOCATED INSIDE TO HELIX.

3-      HYDROGEN BOND IN BASES.

4-      TEN BASE PAIR PER TURN OF HELIX.

5-      TWO STANDS ARE ANTI PARALLEL.

6-      HAS TWO DIFFERENT GROVES.

7-      DOUBLE HELIX IS RIGHT HANDED.

GENETIC CODE –  

 correspondence between DNA and protein.

1 -SENSIBILITY.

2-UNIVERSALITY-   Genetic code is universal except mitochondria.

3-UNAMBIGUITY.-   fix meaning

4-REDUNDANCY.- sufficient in number .

5- COMMALES.

6-NON OVERLAPPING.

7-DECIPHER ABILITY.

8-CO LINEARITY.

9-START AND STOP CODE.