A human cell's DNA, when uncoiled, extends to about 2 meters. This considerable length is meticulously organized and compressed within the cell's nucleus. This intricate packaging process involves specialized proteins called histones and the subsequent folding of chromatin into higher-order structures. Even with its vast length, DNA is efficiently condensed to occupy the minuscule space of the cell nucleus.
DNA Packaging:
\[
\text{2 m} \rightarrow \text{Wrapped into histones} \rightarrow \text{Forming nucleosomes} \rightarrow\text{Folding chromatin fibers}\rightarrow \text{Chromosomes}
\]
Conclusion: The DNA within a single human cell, when fully extended, measures approximately 2 meters.
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