What did the experiments of griffith Avery and Hershey and chase show?

Answer 1

The first major experiment that led the discovery of DNA as the genetic material was performed by Griffith and Avery. They studied 2 strains of bacteria "Streptococcus Pneumonia, which causes pneumonia. They found that one strain could be transformed into other forms of bacteria and germs.

Answer 2

Well, isn't that just a happy little question! Griffith, Avery, and Hershey & Chase showed us the importance of DNA in heredity and how it carries genetic information. Their experiments helped us understand how DNA can transform harmless bacteria into disease-causing ones, and how it is passed down from one generation to the next. Just like adding a touch of color to a painting, these experiments added vibrant details to our knowledge of genetics.

Answer 3

The culmination of experiments proved DNA contains hereditary information. Scientists have known about DNA since the 1860's but it was assumed that protein complexes carries the information for genetic traits. Not until Griffith first recognized a "transformation principle" during his work with viruses was DNA considered to contain hereditary information. Very few biologists however believed from his work alone that DNA contained hereditary information. The Avery-MacLeod-McCarty experiment, a continuation of the Griffith experiment, proved DNA, not proteins, are responsible for trait retention in offspring. Later Hershey and Chase took a radical approach with radio-tagging phosphorous and sulfur molecules in viruses to determine which of the two were passed on to offspring. Their experiment confirmed the conclusion of the Griffith and Avery-MacLeod-McCarty experiment, DNA contains hereditary information.

Answer 4

The result was that it changed scientists opinions on how traits were inherited. Scientists originally thought that traits were inherited through proteins, but as Hershey and Chase showed, this is incorrect.

Alfred Hershey (shown above) and Martha Chase showed that traits are inherited through DNA through using markers and DNA and Proteins on bacteria, and seeing if the markers carried through to their offspring. The only marker that carried onto the bacteria's offspring was the marked DNA.

Answer 5

These experiments demonstrated that DNA is the genetic material in cells. Griffith's transformation experiment showed that a heritable factor was responsible for transformation; Avery's work identified DNA as that factor. Hershey and Chase's study with bacteriophages further confirmed that DNA, not protein, carries genetic information in cells.

Answer 6

They convinced many scientists that DNA was the genetics material ground in gene

Answer 7

they dicovered DNA