You will know that one of your mutations or differences from the RSRS is a heteroplasmy by its letter codes.
| Symbol | Meaning | Symbol | Meaning | |
|---|---|---|---|---|
| U | U (Uracil) | S | C or G | |
| M | A or C | Y | C or T | |
| R | A or G | K | G or T | |
| W | A or T | V | A or C or G | |
| H | A or C or T | B | C or G or T | |
| D | A or G or T | X | G or A or T or C | |
| N | G or A or T or C | |||
Like other types of mitochondrial DNA (mtDNA) mutations, heteroplasmy is written with the original value, the location of the mutation, and the new (mutated) value. For example, a heteroplasmy at position 73 where the heteroplasmic values are A or G is written as G73R.