Selected article for: "additional model and parameter model"
Author: Zhao, Huabin; Ru, Binghua; Teeling, Emma C.; Faulkes, Christopher G.; Zhang, Shuyi; Rossiter, Stephen J.
Title: Rhodopsin Molecular Evolution in Mammals Inhabiting Low Light Environments
  • Document date: 2009_12_16
    • ID: 02uqygfs_54
    Snippet: Two pairs of sites models were implemented. The nearly neutral model (M1a) assumes two classes of sites: one is under purifying selection with 0,v 0 ,1, the other is under neutral evolution with v 1 = 1, and was compared to the positive selection model (M2a) in which an additional v parameter is included that allows positive selection where present (v.1). We also used the M8a model (b & v = 1) which constrains 0,v,1 over sites following a b distr.....
    Document: Two pairs of sites models were implemented. The nearly neutral model (M1a) assumes two classes of sites: one is under purifying selection with 0,v 0 ,1, the other is under neutral evolution with v 1 = 1, and was compared to the positive selection model (M2a) in which an additional v parameter is included that allows positive selection where present (v.1). We also used the M8a model (b & v = 1) which constrains 0,v,1 over sites following a b distribution and allows v = 1 at some sites, and compared this to M8 model (b & v model), in which positive selection is allowed.

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