How Two Meters of DNA Is Packaged Into a Human Cell Cells are | English Reading

How Two Meters of DNA Is Packaged Into a Human Cell

Cells are fascinating molecular factories. In one cell, a particular gene might be "turned on", so that the DNA code can be transcribed into mRNA and then translated into a protein that serves the cells function. In other cells, the very same gene might be "turned off", because it isn't required for that cell's particular purpose in an organism. Regardless of whether the gene is turned "on" or "off", the DNA encoding all genes is present in every single cell. That's a lot of information, and when you consider that a cell's nucleus – the organelle that contains the DNA code – is approximately six micrometers in size, it's clear that efficient storage is necessary.


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