What is a RNA gene Is the statement Nuclear genome contains c a 3000 RNA genes less than 10 of total gene number true According to the FANTOM project only 17 594 of the 33 409 transcriptional units were determined to have coding potential As a result all remaining units have the potential to be puative ncRNAs Okazaki et al 2002 Nature 420 563 573 Suzuki and Hayashizaki 2004 Bioessays 26 833 843 A very recent estimate suggests that there may be at least 28 000 ncRNAs within the FANTOM library Liu et al 2006 PLoS Genet 2 529 536 Another estimate has put the percentage at least in humans at around 98 Mattick 2001 Embo Rep 2 986 991 What exactly are you defining as an RNA gene in this statement