Support your opinion by describing each classical experiment and indicate how it provided evidence for the chemical nature of the gene.
- Hershey and Chase- bacteriophage replication
- Griffith and Avery, MacLeod and McCarty- bacterial transformation
- Meselson and Stahl- DNA replication in bacteria
- Wilkins and Franklin-X-ray crystallography
A)Hersey and Chase experiment on a bacteria called phage.Phage consisted of a DNA molecule surrounded by a protein coat.When phage infect bacteria, they attcah to the surface of the bacterium inject DNA into cells. Phage were produced in medium containing S-radioactively-labeled amino acids. The shaking of the cells caused the empty proteins coats to be removed. This demonstrated that the DNA carries the genetic information for a new generation of phage.
ReplyDeleteB) Griffith and Avery experimented on a vaccine called Streptcoccus against vaccine. The bacteric contain two forms (S)smooth and (R)rough.The S was injected into the mice, instantly killing them. This implied that the genetic material hasbeen transferred from the dead to live cell.
C) Meselson and Stahl expeerimented on DNA replication.They use E.Coli as their bacteria to determine if the nitrogen was heavier. In conclusion the nitrogen was heavier.
D)Wilkins and Franklin experiment on a crystal DNA molecule. They obtain an x-ray pattern that showed the X shape that DNA has a helix shape.
Sheniqua, I need your opinion were men or women the pioneers to genetic discovery?
ReplyDeleteIn my opinion, I believe that women were the pioneers to genetic discovery because of their results they concluded from each experiment. For example, Rosalind Franklin discovered that looking through an X-ray, you can determine the DNA helix shape. Many other scientists ideas wasn`t as complicated as this.
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