Comparison of IGS vs non-IGS genes

[palexiou]

IGS genes (intersection of all algos) show easier predictive power. Why?

1. 3UTR length distribution comparison (let's get numbers and vio-plots)
2. conservation comparison. produce mean phyloP scores per 3UTR. get numbers and vio-plots @dimostzim
3. what other characteristics are relatively easy to test?