🧬DNA Length Calculator
Human genome ≈ 3,000,000,000 bp
The physical length of a DNA molecule is calculated from its base pair count. Each base pair contributes 0.34 nanometres. The human genome has ~3 billion bp giving about 1.8 metres of DNA per cell.
- 1Length = bp × 0.34 nm
- 21 nm = 10⁻⁹ m
- 3Human diploid cell: 6×10⁹ bp × 0.34nm = ~2m total
Human genome: 3×10⁹ bp=~1.02m per haploid genome6×10⁹ bp per diploid cell = ~2m total
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Fun Fact
If all the DNA in a human body were laid end to end, it would stretch 67 billion km — about 450 times the Earth-Sun distance.
References
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