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Who first discovered that DNA not protein is the genetic material of the cell?
Wiki User
∙ 11y ago
Less than a hundred years ago scientists were not sure of the identity of the chemical substance in the chromosomes that stored and transmitted genetic traits. The common thought was that it was protein, however scientists began to look at DNA as the possible genetic material.
There were three major studies that confirmed that DNA was indeed the genetic information. It all began with Frederick Griffith. Griffith studied two strains of bacteria, a virulent, or disease causing form, and a non-virulent, or non-disease causing form. His research found that two seemingly harmless strains of bacteria were deadly due to transformation, a process in which bacteria takes up foreign DNA.
The second study was by Oswald Avery. Avery wanted to identify the substance that made the non-virulent bacteria become virulent. To do this he modified Griffith's experiment and used protein and DNA destroying enzymes to help him identify that DNA was the genetic material.
Lastly, Alfred Hershey and Martha Chase confirmed that DNA is indeed the genetic material. They did this by radioactively labeling the protein coat and DNA in viruses. They found that only the radioactively labeled DNA was passed along to the new viruses, thus confirming that DNA, not protein, was the genetic material.
Wiki User
∙ 11y ago
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Are viruses prokaryotes?
First off a prokaryotic organism is a thing that has no nucleus that holds it's genetic material. Viruses are prokaryotes. Their genetic material isn't in a nucleus. It has an inner core that holds its genetic material, and the inner core is protected by the virus's protein coat.
What did Hershey and Chase show the genetic material of the t2 bacteriophage was?
DNA is the genetic material. However, Hershey-Chase also stated that some little sulfur containing material also entered the bacterial cell. Looking at these two conclusions, Hershey-Chase could not reach a definite conclusion as to whether DNA or Protein contains the genetic material. The conclusion came from Watson-Crick who stated that the sulfur containing material could have entered the cell due to the fact that DNA replication and subsequently translation of the mRNA leads to the synthesis of sulfur containing protein which were found in the bacterial cell.
Why did researchers originally think that protein was the genetic material?
Researchers originally thought that protein was the genetic material because proteins had specific functions with great heterogeneity. Enzyme holds DNA strands apart because of a single stranded binding protein.
What describes the flow of genetic information?
Genetic information flows from DNA to RNA to protein. +DNA to RNA to protein
What are the two major components of a viral particle?
The first two are common to all viruses:1. Nucleic acid core. The nucleic acid core can either be DNA or RNA that makes up the genetic information of the virus. RNA genome only occurs in viruses.2. Capsid. A capsid is the protein coat that protects the nucleic acid from the environment. It also plays a role in how some viruses attach to a host cell.Some have an3. Envelope. An envelope is a membrane bilayer outside their capsid. If a virus does not have an envelope, the virus is called a naked virus. A naked virus is more resistant to changes.
When the genetic material was first being isolated and studied there was a controversy about it being DNA or protein-- those that backed protein as the genetic material almost got it right-- explain?
Scientists thought genetic material was a protein not DNA because there are 20 different amino acids for a building of a protein polymer, while DNA polymers only have 4 nucleotide bases.
Are viruses prokaryotes?
First off a prokaryotic organism is a thing that has no nucleus that holds it's genetic material. Viruses are prokaryotes. Their genetic material isn't in a nucleus. It has an inner core that holds its genetic material, and the inner core is protected by the virus's protein coat.
The first genetic material was most likely?
RNA
Who first discovered protein?
Dr. George Georgiou
How was Jacobsen Syndrome discovered?
It as first discovered by Danish physician Petra Jacobsen. It was discovered through genetic testing of children, thought to have genetic disorders. Its also referred to as 11q terminal deletion disorder
Many scientists think that DNA was the first genetic material?
yes
When was the first molecular chaperonin protein discovered?
youre daddy can answer that question
What did Hershey and Chase show the genetic material of the t2 bacteriophage was?
DNA is the genetic material. However, Hershey-Chase also stated that some little sulfur containing material also entered the bacterial cell. Looking at these two conclusions, Hershey-Chase could not reach a definite conclusion as to whether DNA or Protein contains the genetic material. The conclusion came from Watson-Crick who stated that the sulfur containing material could have entered the cell due to the fact that DNA replication and subsequently translation of the mRNA leads to the synthesis of sulfur containing protein which were found in the bacterial cell.
When was testicular cancer first discovered?
Nobody 'developed' it ! It is a genetic mutation of the body - not some 'invented' disease.
What is the function of nucleic acid?
ANSWERThe main function of nucleic acids is to store and transmit genetic material and use the information to direct the synthesis of new protein.
Why did researchers originally think that protein was the genetic material?
Researchers originally thought that protein was the genetic material because proteins had specific functions with great heterogeneity. Enzyme holds DNA strands apart because of a single stranded binding protein.
What does the offspring of asexual reproduction receives?
The same genetic material from the single parent. In a word they are clones of the first.
