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Table 2 Description and Pearson correlation coefficients (R) and their statistical significance between dN/dS (based on all substitution categories together) and body mass reported in different studies. Significant correlations are highlighted in italics

From: GC-biased gene conversion conceals the prediction of the nearly neutral theory in avian genomes

Study (dataset)

Number of genes

Description

Neornithes

Neoaves

R

p value

R

p value

Weber et al. [31]

921

Alignments from Jarvis et al. [57] present in all 48 species

− 0.43

2.70 × 10 − 3

NA

NA

Figuet et al. [30]

1077

Alignments from Jarvis et al. [57] for orthologs that are also present in mammals and non-avian sauropsids.

Max missing data of 6 species

0.13

3.20 × 10− 1

NA

NA

Botero-Castro et al. [32] (Figuet+HMMclean)

1077

Dataset from Figuet et al. 2016 + alignment filtering based on HMMclean

0.17

2.80 × 10− 1

0.42

4.00 × 10 − 3

Botero-Castro et al. [32]

(Botero-Castro)

1077 +  1245

Figuet+HMMclean dataset +  1245 previously non-annotated GC-rich genes present in at least 10 species

0.23

1.30 × 10− 1

0.59

7.34 × 10 −5

This study

7986

Alignments from Jarvis et al. [57]

Max missing data of 6 species

0.08

6.09 × 10−1

0.19

2.19 × 10−1