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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Plants, algae, and a group of bacteria called cyanobacteria are the only organisms capable of performing photosynthesis.
Land breeze.
Because a land breeze is usually early in the morning and late an night.
