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प्रश्न
Explain Avery, McCarty, and MacLeod’s experiment in detail.
उत्तर
- Avery, Macleod, and McCarty (1944) purified DNA, RNA, proteins (enzymes), and other materials from heat-killed S-type and mixed them with R-type to see which ones could transform living R-types to S-types.
- Only those mixed with DNA were transformed into S-type bacteria.
- They also discovered that protein-digesting enzymes (proteases) and RNA-digesting enzymes (RNases) did not affect transformation. This indicated the transforming substance was neither a protein nor RNA.
- DNA digested with DNase inhibited transformation, suggesting that DNA caused the transformation.
संबंधित प्रश्न
Sketch and label lytic cycle.
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Give a reason why :
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Explain the Griffith’s experiment in detail with diagram.
Identify the observations that were made in Hershey-Chase's experiment, when the radioactive viruses were allowed to infect E. coli.
P. E. coli which were infected by viruses with radioactive DNA became radioactive.
Q. E. coli which were infected by viruses with radioactive protein did not become radioactive.
R. E. coli which were infected by viruses with radioactive protein became radioactive.
S. E. coli which were infected by viruses with radioactive DNA did not become radioactive.
To prove that DNA is the genetic material, which radioactive isotopes were used by Hershey and Chase (1952) in experiments?
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Avery, MacLord and McCarty proved that ______.
