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In Hershey and Chase experiment, what finding led to the conclusion that DNA is the genetic material? (1)The presence of radioactivity in the bacteria when 35S was used . (2) The presence of radioactivity in the supernatant when 35S was used. (3)The presence of radioactivity in the bacteria when 32P was used. (4)The presence of radioactivity in the supernatant when 32P was used.?
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In Hershey and Chase experiment, what finding led to the conclusion th...
Hershey and Chase Experiment: Finding that led to the conclusion that DNA is the genetic material
The Hershey and Chase experiment was a series of experiments conducted by Alfred Hershey and Martha Chase in 1952 that helped to confirm that DNA was the genetic material responsible for heredity. The experiment was performed using bacteriophages, which are viruses that infect bacteria.
1. The Experiment
The experiment involved labeling the bacteriophages with radioactive isotopes and then observing their behavior when they infected bacteria. The two radioactive isotopes used in the experiment were ^32P and ^35S, which label DNA and protein respectively.
- Labeling the Bacteriophages: Hershey and Chase labeled the T2 bacteriophages with either ^32P or ^35S. The isotopes were incorporated into the phage particles.
- Infection of Bacteria: The labeled phages were allowed to infect E. coli bacteria.
- Separation of Phages and Bacteria: After the infection, the mixture was put into a blender to separate the phages from the bacteria. The phages were separated in the supernatant (liquid) while the bacteria were in the pellet (solid).
- Centrifugation: The mixture was then centrifuged to separate the supernatant and the pellet.
- Detection of Radioactivity: The radioactivity in the supernatant and pellet was then measured.
2. The Findings
The Hershey and Chase experiment showed that the radioactivity was present in the bacterial cells when the bacteriophages were labeled with ^32P, while the radioactivity was present in the supernatant when the bacteriophages were labeled with ^35S.
- Presence of Radioactivity in the Bacteria when 32P was Used: When the bacteriophages were labeled with ^32P, the radioactivity was found to be present in the bacterial cells.
- Presence of Radioactivity in the Supernatant when 35S was Used: When the bacteriophages were labeled with ^35S, the radioactivity was found to be present in the supernatant.
3. The Conclusion
Based on the findings of the experiment, Hershey and Chase concluded that the DNA is the genetic material responsible for the transmission of hereditary information from one generation to the next. This experiment helped to establish DNA as the genetic material, which was a significant breakthrough in the field of genetics.
The Hershey and Chase experiment was a series of experiments conducted by Alfred Hershey and Martha Chase in 1952 that helped to confirm that DNA was the genetic material responsible for heredity. The experiment was performed using bacteriophages, which are viruses that infect bacteria.
1. The Experiment
The experiment involved labeling the bacteriophages with radioactive isotopes and then observing their behavior when they infected bacteria. The two radioactive isotopes used in the experiment were ^32P and ^35S, which label DNA and protein respectively.
- Labeling the Bacteriophages: Hershey and Chase labeled the T2 bacteriophages with either ^32P or ^35S. The isotopes were incorporated into the phage particles.
- Infection of Bacteria: The labeled phages were allowed to infect E. coli bacteria.
- Separation of Phages and Bacteria: After the infection, the mixture was put into a blender to separate the phages from the bacteria. The phages were separated in the supernatant (liquid) while the bacteria were in the pellet (solid).
- Centrifugation: The mixture was then centrifuged to separate the supernatant and the pellet.
- Detection of Radioactivity: The radioactivity in the supernatant and pellet was then measured.
2. The Findings
The Hershey and Chase experiment showed that the radioactivity was present in the bacterial cells when the bacteriophages were labeled with ^32P, while the radioactivity was present in the supernatant when the bacteriophages were labeled with ^35S.
- Presence of Radioactivity in the Bacteria when 32P was Used: When the bacteriophages were labeled with ^32P, the radioactivity was found to be present in the bacterial cells.
- Presence of Radioactivity in the Supernatant when 35S was Used: When the bacteriophages were labeled with ^35S, the radioactivity was found to be present in the supernatant.
3. The Conclusion
Based on the findings of the experiment, Hershey and Chase concluded that the DNA is the genetic material responsible for the transmission of hereditary information from one generation to the next. This experiment helped to establish DNA as the genetic material, which was a significant breakthrough in the field of genetics.
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In Hershey and Chase experiment, what finding led to the conclusion th...
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In Hershey and Chase experiment, what finding led to the conclusion that DNA is the genetic material? (1)The presence of radioactivity in the bacteria when 35S was used . (2) The presence of radioactivity in the supernatant when 35S was used. (3)The presence of radioactivity in the bacteria when 32P was used. (4)The presence of radioactivity in the supernatant when 32P was used.?
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In Hershey and Chase experiment, what finding led to the conclusion that DNA is the genetic material? (1)The presence of radioactivity in the bacteria when 35S was used . (2) The presence of radioactivity in the supernatant when 35S was used. (3)The presence of radioactivity in the bacteria when 32P was used. (4)The presence of radioactivity in the supernatant when 32P was used.? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about In Hershey and Chase experiment, what finding led to the conclusion that DNA is the genetic material? (1)The presence of radioactivity in the bacteria when 35S was used . (2) The presence of radioactivity in the supernatant when 35S was used. (3)The presence of radioactivity in the bacteria when 32P was used. (4)The presence of radioactivity in the supernatant when 32P was used.? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In Hershey and Chase experiment, what finding led to the conclusion that DNA is the genetic material? (1)The presence of radioactivity in the bacteria when 35S was used . (2) The presence of radioactivity in the supernatant when 35S was used. (3)The presence of radioactivity in the bacteria when 32P was used. (4)The presence of radioactivity in the supernatant when 32P was used.?.
In Hershey and Chase experiment, what finding led to the conclusion that DNA is the genetic material? (1)The presence of radioactivity in the bacteria when 35S was used . (2) The presence of radioactivity in the supernatant when 35S was used. (3)The presence of radioactivity in the bacteria when 32P was used. (4)The presence of radioactivity in the supernatant when 32P was used.? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about In Hershey and Chase experiment, what finding led to the conclusion that DNA is the genetic material? (1)The presence of radioactivity in the bacteria when 35S was used . (2) The presence of radioactivity in the supernatant when 35S was used. (3)The presence of radioactivity in the bacteria when 32P was used. (4)The presence of radioactivity in the supernatant when 32P was used.? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In Hershey and Chase experiment, what finding led to the conclusion that DNA is the genetic material? (1)The presence of radioactivity in the bacteria when 35S was used . (2) The presence of radioactivity in the supernatant when 35S was used. (3)The presence of radioactivity in the bacteria when 32P was used. (4)The presence of radioactivity in the supernatant when 32P was used.?.
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