<Tr> <Td> Cytochrome b </Td> <Td> MT </Td> <Td> MTCYB </Td> <Td> 1,140 </Td> <Td> </Td> <Td> 1,140 </Td> <Td> 0 </Td> <Td> no </Td> </Tr> <Tr> <Td> Dystrophin </Td> <Td> X </Td> <Td> DMD </Td> <Td> 2,220,381 </Td> <Td> 79 </Td> <Td> 10,500 </Td> <Td> 2,209,881 </Td> <Td> yes </Td> </Tr> <Tr> <Td> Glyceraldehyde - 3 - phosphate dehydrogenase </Td> <Td> 12 </Td> <Td> GAPDH </Td> <Td> 4,444 </Td> <Td> 9 </Td> <Td> 1,425 </Td> <Td> 3,019 </Td> <Td> yes </Td> </Tr> <Tr> <Td> Hemoglobin beta subunit </Td> <Td> 11 </Td> <Td> HBB </Td> <Td> 1,605 </Td> <Td> </Td> <Td> 626 </Td> <Td> 979 </Td> <Td> no </Td> </Tr>

Approximately what percentage of discovered genes have known functions