Table 1.

Theoretical calculations of the percentages of each type of change that will be cause by SNPs, DNPs and TNPs

Type of xNP	Number of nucleotides changed	Percentage of xNPS resulting in the same amino acids, %	Stop codon read through (from stop to coding), %	Percentage of changes resulting in stop codons (premature stop), %	Percentage of XNPs resulting in the change of:
					1 Amino acid, %	2 Amino acids, %
SNPs	1	24	4	4	68	N/A
DNPs	2	0.90	7	6	78	8
TNPs	3	0.40	8	7	51	33