How your body ensures every new cell receives an exact genetic blueprint
In short: DNA replication is a masterclass in biological engineering. This video explores the precise molecular machinery that allows cells to duplicate their entire genetic code without making errors.
The process relies on a semi-conservative mechanism, famously proven by the Meselson-Stahl experiment. This means each new DNA molecule consists of one original strand and one newly synthesized partner.
Because DNA is anti-parallel, replication occurs differently on two strands: the leading strand is built continuously, while the lagging strand is produced in fragments. A specialized team of enzymes—including helicase to unzip the helix, primase to lay down starters, and DNA polymerase to build the new chain—coordinates this complex assembly.
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- Summary by Intellect · source: DNA Replication
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