To accomplish this, each strand of existing DNA acts as a ... and anti-sequence copying that preserves the coding of the original DNA. In the prokaryotic bacterium E. coli, replication can occur ...

For the first time, scientists have witnessed the very moment DNA begins to unravel, revealing a necessary molecular event ...

Once transcription is initiated, the DNA double helix unwinds and RNA polymerase reads the template strand, adding nucleotides to the 3′ end of the growing chain (Figure 2b). At a temperature of ...

DNA double-strand breaks arise when cells are exposed ... Progeria is linked to a gene coding for lamin A. Mutations in this ...

The sequence of these base pairs along the DNA strand encodes genetic information ... However, RNA is typically single-stranded and serves various functions, such as coding for proteins (mRNA), ...

The enzyme RNA polymerase attaches to the DNA in a non-coding region just before the gene. RNA polymerase moves along the DNA strand. Free RNA nucleotides form hydrogen bonds with the exposed DNA ...

DNA molecules are large and complex. They carry the genetic code that determines the characteristics of a living organism. The backbone of the DNA double helix consists of alternating phosphate ...

Various non-coding RNAs also play important roles in regulating gene ... In this process, the enzyme RNA polymerase uses one strand of the DNA as a template to synthesize a complementary RNA strand.