Figure 1. Zebrafish age estimation from DNA methylation of 29 CpG sites. Performance of the model in the (A) training data set, (B) testing data set. Colour represents the sample sex in the correlation plots. (C) Boxplots show the absolute error rate in the training and testing data sets. (D) Unsupervised clustering of samples using the 29 CpG sites show separation based on age in the first principle component.