<span>A special interest group work hard to get a rider attached to a bill b</span>ecause many special-interest groups try to get something unrelated into a bill and to benefit the group.
Answer
Hi,
A. Radioactive markers
Explanation
Hershey and Chase used specific radioisotopes to form a trace of the two important components of the virus in its life cycle. The 32P was used to identify the DNA while the 35s labeled the proteins.DNA strands have a sugar phosphate where as protein contains sulfur.
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