What type of virus did chase and Hershey use in their experiment?
bacteriophage T2
What did Hershey and Chase use to demonstrate DNA was the genetic material?
Hershey and Chase knew that the phages attached to the surface of a host bacterial cell and injected some substance (either DNA or protein) into the host. This substance gave “instructions” that caused the host bacterium to start making lots and lots of phages—in other words, it was the phage’s genetic material.
How did Hershey and Chase discriminate between DNA and protein in their experiments to show that DNA was the genetic material of bacteriophage T2?
C. How did Hershey and Chase discriminate between DNA and protein in their experiments to show that DNA was genetic material of bacteriophage T2? They labeled the DNA with radioactive phosphorous and the protein with radioactive sulfur. DNA can adopt two different conformations.
Why did Hershey and Chase use bacteriophages quizlet?
Importantly, they showed that phage DNA enters the host cell and directs phage reproduction. This showed that DNA was the genetic material that was passed down from the virus to a cell and thus DNA was the material that is passed from a cell to another cell.
What experiment did Hershey and Chase do quizlet?
hershey and chase needed to confirm whether DNA or protein was the hereditary material. they did an experiment on viruses because a virus cannot reproduce without injecting its hereditary info into the host. So they labeled one phage with sulfur which is found in protein and one with phosphorous which is found in DNA.
Why was it important to use a bacteriophage in the Hershey-Chase experiment rather than an animal virus?
Why was it important to use a bacteriophage in the Hershey-Chase experiment rather than an animal virus? A bacteriophage was used instead of an animal cell because the phage DNA makes multiple copies of itself using the host machinery, and eventually the host cell bursts, releasing a large number of bacteriophages.
How did Hershey and Chase confirm Avery’s results?
How did Hershey and Chase confirm Avery’s results? Avery said that DNA transmits genetic information from one generation to the next. Hershey and Chase concluded that the genetic material of the bacteriophage was DNA and not protein, confirming what Avery said.
What are the 3 functions that DNA must perform?
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.
What was Avery’s conclusion?
Boivin’s conclusion was explicit: “we should now look to the nucleic acid component of the giant nucleoprotein molecule that forms a gene, rather than to the protein part, to find the inductive properties of the gene” [20]. Figure 1. Oswald T. Avery in 1944.
What did Avery Griffith and Hershey and Chase’s experiments determine?
Groundbreaking experiments by Griffith, Avery, Hershey, and Chase disproved the notion that proteins were genetic material. Together, these experiments demonstrated that DNA was transferred between generations and that this molecule had the ability to transform the properties of a cell.
What was transformed in Griffith’s experiment?
Terms in this set (13) What was “transformed” in Griffith’s experiment? The R bacteria. Avery and his group added extract enzymes known to break down proteins, the extract still transformed the R bacteria to the S form. Transformation failed to occur when they added an enzyme that destroys DNA.
What is the hypothesis for the phage infection experiment?
In their experiments, Hershey and Chase showed that when bacteriophages, which are composed of DNA and protein, infect bacteria, their DNA enters the host bacterial cell, but most of their protein does not. Hershey and Chase and subsequent discoveries all served to prove that DNA is the hereditary material.