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scoundrel [369]
3 years ago
12

How did Hershey and Chase use radioactivity to draw a conclusion about proteins and DNA?

Biology
1 answer:
Stolb23 [73]3 years ago
4 0
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.
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In the S phase or synthesis phase of Interphase, the cell duplicates its genetic material (DNA). Hence, an onion cell observed by a student to have loosely coiled chromatin depicting DNA duplication is in the S-PHASE.

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