dsDNA: The double-stranded DNA molecule that needs to be copied! It contains specific sequences called origins of replication where the molecule can begin to be unwound and copied.
This is a really well-done short illustration of DNA replication! It doesn’t go into great detail about the various enzymes involved, or the intricacies of the process, but it covers all the basics very clearly.
Since DNA is the information database of the cell, it needs to make a copy of itself every time the cell replicates. If it were unable to do so, the newly formed cell (called a daughter cell) would have no DNA of its own to direct and regulate its function, and moreover would be unable to replicate itself. Continue reading “DNA Replication”