I am new to Bioinformatics and I am exploring the refGene.txt files from the UCSC genome annotation database for several species.
My question concerns the Dec. 2011 (GRCm38/mm10) assembly of the mouse genome. I have seen that the Human one (hg39) contains both coding and non-coding transcripts. But the Mouse (mm10) RefGene.txt only contains coding transcripts.
Why is that?
Source of the file: http://hgdownload.soe.ucsc.edu/goldenPath/mm10/database/refGene.txt.gz