The major contribution made by Avery, MacLeod, and McCarty was 'transformation of nonvirulent cells with a DNA extract was blocked only if DNase was added'. This observation supported the idea that the transforming agent in Griffith's experiment was DNA.
The Avery–MacLeod–McCarty experiment showed that DNA was the transforming agent observed in Griffith's experiment.
Griffith's experiment (1928) suggested that bacteria were capable of transferring genetic information (DNA) by a process of horizontal gene transfer called transformation.
While the bacteria were killed by heat, Frederick Griffith observed that the DNA had was taken up by II-R strain bacteria via transformation.
Avery–MacLeod–McCarty experiment observed that protease enzymes did not destroy the transforming agent (but DNAse destroyed this transforming principle), thereby suggesting that the transforming agent in Griffith's experiment was bacterial DNA.
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In a solid the particles are very tightly packed and can’t move around much whereas in a liquid they are touching but can move around a bit. Liquids can also flow/pour
<span>This setting will no longer happen for people nowadays
are much conscious with their health and that people would not think of food
scarcity, for all types of food are made available and that various fitness gym
are everywhere. Being obese is lack of self-control and eating healthy diet is
always choice. </span>Therefore, evolve mechanisms
are not always adaptive in modern society.