DNA Structure and Replication
Which of the following are short nucleotides strands made by DNA polymerase working in the opposite direction of the replication fork?

Leading strands
Okazaki fragments
Primers
Lagging strand

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DNA Structure and Replication
In DNA, there are

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

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