Correction: Optimization of the standard genetic code according to three codon positions using an evolutionary algorithm.

[This corrects the article DOI: 10.1371/journal.pone.0201715.].

There is an error in the second sentence of the fourteenth paragraph of the Results section. The correct sentence is: The GD values for the first and third codon positions are negative, ranging from −12.8% to −49.1% (Fig 8B).

Fig 8

The GD measure calculated under four models of the genetic code (DEG, BLO, NUM, and GEN) when the polarity costs were minimized for three codon positions individually (A, B, and C) or as the sum of costs over all positions (D).

In Fig 8, the headings are missing. Please see the corrected Fig 8 here.