DNA Structure and Replication
The overall conclusion of the Hershey-Chase experiment was that

phage DNA was similar to bacterial DNA
the ratio of Adenine to thymine was always the same
proteins and DNA were responsible for heredity
DNA was responsible for heredity

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DNA Structure and Replication
In DNA, there are

five bases known as adenine, guanine, thymine, tryptophan and cytosine
four bases known as adenine, guanine, thymine and cytosine
three bases known as adenine, guanine and cytosine
only two bases known as adenine and cytosine

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DNA Structure and Replication
In a typical electrophoresis experiment, larger fragments of DNA move more

quickly, so they appear nearer the bottom of a gel photograph
slowly, so they appear nearer the bottom of a gel photograph
slowly, so they appear nearer the top of a gel photograph
quickly, so they appear nearer the top of a gel photograph

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