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Table 1 Gene duplications, synonymous (Ka) and non-synonymous (Ks) substitutions and time of divergence of the PgHDZ gene family

From: Genome-wide identification and systematic analysis of the HD-Zip gene family and its roles in response to pH in Panax ginseng Meyer

Duplicated gene pairs

Ka

Ks

Ka/Ks

Date (Million Years Ago)

PgHDZ15-02

PgHDZ17-01

0.205

0.364

0.563

27.981

PgHDZ09

PgHDZ16-03

0.159

0.383

0.415

29.481