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Nucleotide substitution rate. Nucleotide substitution rates for SNPs in promoter regions (P) and all SNPs genomewide (A) show roughly similar rates for transition and transversion substitution, with a slight increase in CG transversions as would be expected from CG rich regions. |
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| Type |
Substitution |
Frequency (P) |
Frequency (A) |
|
|
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| Purine |
A ↔ G |
31.55% |
33.10% |
| Pyrimidine |
C ↔ T |
30.99% |
33.10% |
| Purine ↔ Pyrimidine |
C ↔ G |
12.75% |
8.93% |
| Purine ↔ Pyrimidine |
A ↔ C |
9.43% |
8.77% |
| Purine ↔ Pyrimidine |
G ↔ T |
9.33% |
8.82% |
| Purine ↔ Pyrimidine |
A ↔ T |
5.94% |
7.42% |
Guo and Jamison BMC Genomics 2005 6:140 doi:10.1186/1471-2164-6-140 |
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