What was the conclusion of Hershey and Chase?
Hershey and Chase concluded that protein was not genetic material, and that DNA was genetic material. Unlike Avery’s experiments on bacterial transformations, the Hershey-Chase experiments were more widely and immediately accepted among scientists.
Which of the following statement is correct about the Hershey and Chase experiment?
The correct option is (E) Hershey and Chase experiment lent strong credence to the idea that DNA is the hereditary material, at least of viruses. The Hershey-Chase blender experiment proved that phage DNA is the genetic material in bacteriophages or viruses, not protein.
What are the conclusions of blender experiment?
1952: Geneticists Alfred Hershey and Martha Chase publish the findings of their so-called blender experiments, which conclude that DNA is where life’s hereditary data is found.
Which of the following outcomes would be most likely if the Hershey-chase experiments were repeated without the step involving the blender?
Which of the following outcomes would be most likely if the Hershey-Chase experiments were repeated without the step involving the blender? Both preparations of infected bacteria would exhibit radioactivity.
What did the Hershey-Chase experiment prove?
The Hershey-Chase experiment, which demonstrated that the genetic material of phage is DNA, not protein. The experiment uses two sets of T2 bacteriophages. In one set, the protein coat is labeled with radioactive sulfur (35S), not found in DNA.
Why did Hershey and Chase use 32P and 35S?
Why did Hershey and Chase chose 32p and 35s for use in their experiment? The 32P (phosphorus) was used in the Hershey-Chase experiment because phosphorus is present in deoxyribonucleic acid (DNA), but not in protein. Hence, 35S was used to label only the proteins because DNA does not contain sulfur.
What is the significance of the famous bacteriophages experiment?
Role in laboratory research In 1952 Alfred Day Hershey and Martha Chase used the T2 bacteriophage in a famous experiment in which they demonstrated that only the nucleic acids of phage molecules were required for their replication within bacteria.
How did Hershey and Chase use radioactivity to draw a conclusion about proteins and DNA?
Hershey and Chase studied bacteriophages which are viruses that attack bacteria. They labeled the bacteriophage with radioactive isotopes to see where it goes when a virus attacks. They discovered that nearly all the radioactivity was found in phosphorus, confirming that DNA contains genetic material, not protein.
How did the result of Hershey-Chase experiment strengthen Avery’s conclusion?
How did the results of the Hershey-Chase experiment strengthen Avery’s conclusions? Hershey and Chase studied bacteriophages which are viruses that attack bacteria. In their experiment Hershey and Chase labeled the bacteriophages with radioactive isotopes to see where the virus attacks.
What are the 3 roles of DNA?
DNA contains only four bases, called A, T, C and G. The sequence of the nucleotides along the backbone encodes genetic information. The four roles DNA plays are replication, encoding information, mutation/recombination and gene expression.
Why was s35 used in this experiment?
Why were phosphorus-32 and sulfur-35 perfect for what Hershey & Chase were investigating in their experiments? They were perfect because proteins contain almost no phosphorus and DNA contains no sulfur, so the radioactive isotopes would show up in the cells if the phosphorus-32 or sulfur-35 appeared.
What was the aim of Hershey and Chase experiment how they performed the experiment What was their conclusion?
Hershey and Chase concluded that DNA, not protein, was the genetic material. They determined that a protective protein coat was formed around the bacteriophage, but that the internal DNA is what conferred its ability to produce progeny inside a bacterium.
How did Hershey and Chase prove that DNA is the genetic material?
Complete answer: Two scientists Alfred Hershey and Martha Chase proved that DNA is a genetic material by working on bacteriophages. After doing this, they observed that the viruses which were grown in radioactive phosphorus contained radioactive DNA. There was no presence of radioactive protein.
Why were bacteriophages used in the Hershey-Chase experiment select all that apply?
Why were bacteriophages used in the Hershey-Chase experiment? (Select all that apply.) A. They had a DNA coat and an internal protein molecule. They injected protein inside bacterial cells.
What did Avery conclude caused transformation?
What did Avery conclude caused transformation? DNA was the transforming factor. The harmless bacteria would not have been transformed, and the mice would have lived.
What would Hershey and Chase have concluded if both radioactive?
What would Hershey and Chase have concluded if both radioactive 32P and 35S were found in the bacteria in their experiment? The virus’s protein coat was not injected into the bacteria. Both the virus’s protein coat and its DNA were injected into the bacteria.
What type of virus did Hershey and Chase use in their experiments?
bacteriophage T2
What would Hershey & Chase have concluded if both radioactive 32p and 35s were found in the bacteria in their experiment?
Avery’s experiments showed that bacteria are transformed by… What would Hershey and Chase have concluded if both radioactive 32p and 35s were found in the bacteria after their experiment? Both virus’s protein coat and its DNA were injected into the bacteria.
Is it true that DNA is tightly wrapped around nucleosomes?
The DNA in eucaryotes is tightly bound to an equal mass of histones, which form a repeating array of DNA-protein particles called nucleosomes. The nucleosome is composed of an octameric core of histone proteins around which the DNA double helix is wrapped.