Evolution of the genetic code: partial optimization of a random code for robustness to translation error in a rugged fitness landscape-5

<p><b>Copyright information:</b></p><p>Taken from "Evolution of the genetic code: partial optimization of a random code for robustness to translation error in a rugged fitness landscape"</p><p>http://www.biology-direct.com/content/2/1/24</p><p>Biology Direct 2007;2():24-24.</p><p>Published online 23 Oct 2007</p><p>PMCID:PMC2211284.</p><p></p>swaps). Crosses show the mean values ± one standard deviation. The green line shows the cost of the standard code, and the blue shows the cost of the code that was obtained by minimization of the standard one. The top x-axis is the number of codes that did not reach their local minimum at the preceding step (starting from 300 random codes). The evolution of each code was followed until the code could not be improved anymore. (b) The number of codes that need exactly pairwise swaps to reach minimum vs ; the blue line is the number of steps for the standard code to reach its local fitness peak (9); the red line is the mean of the distribution (19). (c) Same as (a) but the search started with 100 random codes that outperform the standard code. (d) Same as (b) but the search started with 100 random codes that outperform the standard code