DNA copy number
DNA copy number: use dna mass, sequence length, molar mass per base pair. Review the formula, worked example and calculation steps.
Inputs
Use the units shown—
Enter your values and select Calculate.
Formula & explanation
Copies = mass(ng) ×10⁻⁹ × N_A / (length × molar mass per base pair)
Variables & units
- DNA mass
- ng · minimum 0, maximum 1000000000000
- Sequence length
- base pairs · minimum 0.000001, maximum 1000000000000
- Molar mass per base pair
- g/(mol·bp) · minimum 0.000001, maximum 1000000000000
Worked example
Use the example inputs to explore this model; the solution shows each supplied quantity.
Assumptions
Default660 g/(mol·bp) is an approximate double-stranded DNA model; supply the appropriate molecular mass.
Formula version 1.0.0. JavaScript floating-point arithmetic applies. Results display up to 6 decimal places; stored values retain available precision. Use the units shown.
Practice with an example
Use the default input values to find the answer. The reset icon restores those values.
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