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How does DNA polymerase grab the correct nucleotide for replication?

fredreload
in Biology

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So I got 2 questions here.

1. During replication, how does the DNA polymerase "read" the sequence and grab the correct counterpart? Is it because of the nature of the nucleotide, A attracts to T and C attracts to G? Or DNA polymerase actually has a way of grabbing the correct nucleotide?

2. There are free floating trophosphate nucleotides in the cell?

  • 2 months later...

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