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What happens when a molecule of DNA unzips?

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DNA splits, and mRNA and tRNA are there to create new strands for the new replicated DNA strand. This is what happens prior to mitosis in cell division.
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How is a DNA molecule ''unzipped''?

DNA is, as you say, "unzipped" is a complex process. DNA usually unwinds either to replicate DNA or synthesize mRNA to make proteins. I'll use DNA replication as the example.

How is a DNA molecule unzipped?

The original strand of DNA is unzipped by an enzyme that breaks the  hydrogen bonds between the bases. This process continues until the  entire strand of DNA has been unzipp

What happens after DNA is unzipped?

This method is called " Semi-conservative " which replicates the DNA so it begins with unzipping, unwinding the DNA by breaking down the hydrogen bonds between the nitrogenou