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Table 5 Formulae for the expected numbers of triplets after three events

From: Distinguishing successive ancient polyploidy levels based on genome-internal syntenic alignment

Model \(M\in \mathscr {M}\)

   

Triplet \(\Delta \in \mathscr {T}\)

(2,2,2)

(3,2,2)

(2,3,2)

{t1,t1,t1}

-

u′(1+v)3(1+w)3

-

{t1,t1,t2}

2uv(1+v)(1+w)3

2(3u′+u)v(1+v)(1+w)3

2u(3v′+v)

   

×(1+2v′+v)(1+w)3

{t1,t2,t2}

-

-

-

{t2,t2,t2}

-

-

(1+u)v′(1+w)3

{t2;t2;t3}

2(1+u)vw(1+w)

2(1+2u′+u)vw(1+w)

2(1+u)(3v′+v)w(1+w)

{t2,t3,t3}

-

-

-

{t3,t3,t3}

-

-

-

{t1,t1,t3}

2u(1+v)2w(1+w)

2(3u′+u)(1+v)2w(1+w)

2u(1+2v′+v)2w(1+w)

{t1,t3,t3}

-

-

-

{t1,t2,t3}

-

-

-

model \(M\in \mathscr {M}\)

   

triplet \(\Delta \in \mathscr {T}\)

(2,2,3)

(2,3,3)

(3,2,3)

{t1,t1,t1}

-

-

u′(1+v)3

   

×(1+2w′+w)3

{t1,t1,t2}

2uv(1+v)

2u(3v′+v)(1+2v′+v)

2(3u′+u)v(1+v)

 

×(1+2w′+w)3

×(1+2w′+w)3

×(1+2w′+w)3

{t1,t2,t2}

-

-

-

{t2,t2,t2}

-

(1+u)v′

-

  

×(1+2w′+w)3

 

{t2;t2;t3}

2(1+u)v

2(1+u)(3v′+v)

2(1+2u′+u)v

 

×(3w′+w)(1+2w′+w)

×(3w′+w)(1+2w′+w)

×(3w′+w)(1+2w′+w)

{t2,t3,t3}

-

-

-

{t3,t3,t3}

(1+u)(1+v)w′

(1+u)(1+2v′+v)w′

(1+2u′+u)(1+v)w′

{t1,t1,t3}

2u(1+v)2

2u(1+2v′+v)2

2(3u′+u)(1+v)2

 

×(3w′+w)(1+2w′+w)

×(3w′+w)(1+2w′+w)

×(3w′+w)(1+2w′+w)

{t1,t3,t3}

-

-

-

{t1,t2,t3}

-

-

-

model \(M\in \mathscr {M}\)

   

triplet \(\Delta \in \mathscr {T}\)

(3,3,2)

(3,3,3)

 

{t1,t1,t1}

u′(1+2v′+v)3(1+w)3

u′(1+2v′+v)3(1+2w′+w)3

 

{t1,t1,t2}

2(3u′+u)(3v′+v)(1+2v′+v)(1+w)3

2(3u′+u)(3v′+v)(1+2v′+v)(1+2w′+w)3

 

{t1,t2,t2}

-

-

 

{t2,t2,t2}

(1+2u′+u)v′(1+w)3

(1+2u′+u)v′(1+2w′+w)3

 

{t2;t2;t3}

2(1+2u′+u)(3v′+v)w(1+w)

2(1+2u′+u)(3v′+v)(3w′+w)(1+2w′+w)

 

{t2,t3,t3}

-

-

 

{t3,t3,t3}

-

(1+2u′+u)(1+2v′+v)w′

 

{t1,t1,t3}

2(3u′+u)(1+2v′+v)2w(1+w)

2(3u′+u)(1+2v′+v)2(3w′+w)(1+2w′+w)

 

{t1,t3,t3}

-

-

 

{t1,t2,t3}

-

-

 
  1. u= probability that two progeny survive after the first polyploidization event. u′= probability that three survive. Similarly v and v′ are the probabilities that two or three progeny survive, respectively, after the second event. w and w′ are the probabilities that two or three progeny survive after the third event