Tabela 3. Modele substytucji nukleotydów (według Nei i Kumar, 2000; zmienione).
|
A |
T |
C |
G |
A |
T |
C |
G |
---|---|---|---|---|---|---|---|---|
|
model JC69 |
model T92 |
||||||
A |
– |
α |
α |
α |
– |
βθ2 |
βθ1 |
αθ1 |
T |
α |
– |
α |
α |
βθ2 |
– |
αθ1 |
βθ1 |
C |
α |
α |
– |
α |
βθ2 |
αθ2 |
– |
βθ1 |
G |
α |
α |
α |
– |
αθ2 |
βθ2 |
βθ1 |
– |
|
model K2P |
model HKY |
||||||
A |
– |
β |
β |
α |
– |
βgT |
βgC |
αgG |
T |
β |
– |
α |
β |
βgA |
– |
αgC |
βgG |
C |
β |
α |
– |
β |
βgA |
αgT |
– |
βgG |
G |
α |
β |
β |
– |
αgA |
βgT |
βgC |
– |
|
model F81 |
model GTR |
||||||
A |
– |
αgT |
αgC |
αgG |
– |
agT |
bgC |
cgC |
T |
αgA |
– |
αgC |
αgG |
agA |
– |
dgC |
egC |
C |
αgA |
αgT |
– |
αgG |
bgA |
dgT |
– |
fgC |
G |
αgA |
αgT |
αgC |
– |
cgA |
egT |
fgC |
– |
Oznaczenia: gA, gT, gC i gG oznaczają częstość nukleotydów; θ1 = gG + gC; θ2 = gA + gT;