DNA as a genetic material
Features of Genetic Material: Following are the basic requirements of genetic material: It must be stable It must be capable of expressing itself It must be capable of replication It must be inherited from parents to progenies Griffith's Experiment - transforming principle Frederick Griffith, in the year 1928, performed an experiment suggesting that bacteria are capable of transferring genetic information through a process known as transformation. The Experiment: The bacterium Streptococcus pneumoniae was used in the experiment, as it forms two different strains. S III strain, the virulent one have lipopolysaccharide capsule, forming the smooth and capsulated colonies. R II strain, the avirulent one don't have lipopolysaccharide capsule, forming the rough and non-capsulated colonies. In the step first, mouse was injected with S III strain and mouse died. In the second step, mouse was injected with R II strain and mouse survived. In the third step, mouse was injected with heat...