[Genome] Question about tracks and duplicate entries

[Todd Riley]

Hello again,

Thank you for your answers, they were very helpful.  If you don't mind, 
I know have a new question for you.

How are the tracks "Known Genes", "RefSeq Genes", and "Other RefSeq" 
related to each other?  I noticed that there are many RefSeq Genes in 
the KnownGenes table (which makes sense).  However, I also noticed that 
the RefSeq entries in the KnownGene track do not always correspond to 
the entries in the RefSeq table!! Here is an example from hg17:

Known Genes track:

NM_004869    chr18    -    59207406    59240673    59209187    
59240472    11    
59207406,59211621,59215246,59217454,59218260,59218759,59221919,59225644,59228502,59229679,59240445,    
59209289,59211762,59215466,59217536,59218409,59218916,59222039,59225712,59228659,59229791,59240673,    
VPS4B_HUMAN    R8768

RefSeq Genes track:

NM_004869    chr18    -    59207406    59240732    59209187    
59240472    11    
59207406,59211621,59215246,59217454,59218260,59218759,59221919,59225644,59228502,59229679,59240445,    
59209289,59211762,59215466,59217536,59218409,59218916,59222039,59225712,59228659,59229791,59240732, 


Notice that they are not completely the same!!!  I would expect them to 
be the same except for the "VPS4B_HUMAN    R8768" appended to the end of 
the known gene.

Thanks,
Todd