As a part of my daily job, I draw scatterplots, lots of them. And because there are thousands of genes expressed in any mouse or human tissue, my typical plot looks something like this (code). (Actually, it is a comparison of variance that can be attributed to "sex" factor in mRNA vs. protein expression.)
The question is - what is a gene in the top right corner? And what is the one next to him? And this one? And that?
