Estimating the tempo and mode of gene family evolution from comparative genomic data

Table 1.

The number of gene families that showed an expansion, no change, or a contraction along the eight branches, according to the most likely assignments of the gene family sizes of the ancestors


Branch #

Expansions

No change

Contractions

Average expansion
1 (t = 32) 97 3181 239 -0.050
2 (t = 27) 383 3032 102 0.095
3 (t = 22) 509 2922 86 0.147
4 (t = 12) 96 3383 38 0.019
5 (t = 12) 44 3426 47 0.021
6 (t = 5) 3 3491 23 -0.005
7 (t = 10) 10 3313 194 -0.052
8 (t = 5)
2
3515
0
0.001
  • The first column contains the branch number, along with the length of the branch, t, in millions of years. The next three columns show how often an expansion, no change, or a contraction occurred along this branch. The last column shows the average gene family expansion among all families along each branch, where a contraction is counted as a negative expansion.

This Article

  1. Genome Res. 15: 1153-1160

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