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Table 1 Deletions with skipping and blocking

From: A model for biased fractionation after whole genome duplication

Event

i

a

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

r

Start

  

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

 
   

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

 

1

-1

3

1

1

1

1

1

1

0

0

0

1

1

1

1

1

1

1

1

   

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

 

2

  

1

1

1

1

1

1

0

0

0

1

1

1

1

1

1

1

1

 

-4

1

1

1

1

0

1

1

1

1

1

1

1

1

1

1

1

1

1

3

5

1

1

1

1

1

1

1

0

0

0

1

1

1

0

1

1

1

1,1

   

1

1

1

0

1

1

1

1

1

1

1

1

1

1

1

1

1

4

4

3

1

1

1

1

1

1

0

0

0

1

1

0

0

0

0

1

1,2

   

1

1

1

0

1

1

1

1

1

1

1

1

1

1

1

1

1

5

  

1

1

1

1

1

1

0

0

0

1

1

0

0

0

0

1

2

 

-5

4

1

1

0

0

0

0

1

1

1

1

1

1

1

1

1

1

3

  1. Five deletion events affecting two homeologous chromosomes, leading to two runs of single-copy genes. The fourth step illustrates the "skip" process, at i = 5 where the pre-existing deletion is incorporated into a longer run with r = 2. The fifth step shows how further deletion (at i = -1) and the "skip" process (to i = 2) are blocked when a single-copy gene is encountered (i = -1) on the homeologous chromosome. This creates a single-copy run with length l = 7 and r = 3, part on one chromosome, part on the other. Note that r is not observable from the genome data.
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