Examlex
What are the sublayers of the Data Link layer, and what do they do?
RNA Primer
The sequence of about five RNA nucleotides that are synthesized during DNA replication to provide a 3' end to which DNA polymerase adds nucleotides. The RNA primer is later degraded and replaced with DNA.
RNA Primase
An enzyme that creates a short RNA primer as the first step in DNA replication, necessary for DNA polymerase to initiate synthesis.
Okazaki Fragments
Short sequences of DNA nucleotides which are synthesized discontinuously and later joined together during DNA replication on the lagging strand.
DNA Ligase
A catalyst that aids in connecting strands of DNA by promoting the creation of a phosphodiester linkage.
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