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Asked by yard442pup on 11 Nov 2021.
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Nechama Wieder answered on 11 Nov 2021:
if you stretched DNA in one cell out it would be about 2 metres long! its super tightly coiled to fit inside a cell
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Becky Cohen answered on 11 Nov 2021:
If you then laid out all of the DNA in all of your cells back-to-back, it would stretch to around twice the diameter of the Solar System!
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Magdalena Sutcliffe answered on 11 Nov 2021:
DNA doesn’t have a determined length, it depends where it comes from. Combined DNA length from all the chromosomes from one cell of a human body would be about 2 meters.
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Jeffrey O'Callaghan answered on 11 Nov 2021:
In humans, each cell contains about 6 billion base-pairs of DNA. If you extended all this DNA in one cell it would measure about 2 meters. This is all kept in the nucleus of the cell which is tiny at about 10 micro-meters in diameter. This is done by wrapping the DNA very tightly around proteins called histones, which are electrically charged to keep it tightly bound.
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Craig Anderson answered on 11 Nov 2021:
Different organisms have different amounts of DNA, which can be organised into chromosomes. I used to work on moths that had 31 pairs of chromosomes but *only* 640,000,000 bases of DNA. At the moment I’m doing lots of work with mice which have a mere 20 pairs of chromosomes but a whopping 5,000,000,000 nucleotides long, more than 15 times more DNA assembled into really long chromosomes.
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Nithya Nair answered on 12 Nov 2021:
DNA is long thread like structure that is coiled into a tiny packaging. Imagine taking a rope as long as a football field and then compacting it to half an inch.
An individual cell contains about 2 metres of DNA. As for the human body, if you line up all the DNA present back-to-back then you can probably visit the sun and come back 300 times 🙂
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