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. 2018 Oct 13;10(12):3129–3140. doi: 10.1093/gbe/evy227

Table 3.

Four-Taxon ABBA-BABA Test (D-Statistic) Used for Introgression Inference from the Well-Supported Topology from Fig. 3

P1 P2 P3 BBAA ABBA BABA Disca Db p valuec
Malaccensis (DH) Banksii (B) Burmannica (C4) 12185 4289 8532 0.51 −0.33 <2.2e-16
Malaccensis (DH) Zebrina (M) Burmannica (C4) 9622 5400 9241 0.6 −0.26 < 2.2e-16
Zebrina (M) Banksii (B) Burmannica (C4) 11204 6859 6782 0.54 0.005 0.5097
Malaccensis (DH) Banksii (B) Zebrina (M) 10450 7119 6965 0.57 0.02 0.1944
a

Discordance=(ABBA+BABA)/Total

b

=(ABBA−BABA)/(ABBA+BABA)

c

Based on Pearson chi-squared.