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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Could someone clarify the significance of naming a top-level coordinate-system as ‘group’ rather than ‘chromosome’?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>There is one species (stickleback) in Ensembl that has a top-ranked coordinate system called ‘group’, rather than ‘chromosome’.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>There is a karyotype page for stickleback and these ‘groups’ are described as chromosomes: there is no indication of what significance the name ‘group’ has.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I cannot find any other coordinate system called ‘group’, but in EnsemblGenomes the top ranked coord-system of Drosophila pseudoobscura is named ‘chr-group’ but these do not seem to treated as chromosomes/karyotypes by the web interface.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I don’t think there is an enumeration of allowed coordinate-system names, with definitions - maybe there could be?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>cheers<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>trevor<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span style='font-size:12.0pt;font-family:"Arial","sans-serif";color:navy;mso-fareast-language:EN-GB'>Trevor Paterson PhD<br></span></b><span style='font-size:12.0pt;font-family:"Arial","sans-serif";color:navy;mso-fareast-language:EN-GB'><a href="mailto:trevor.paterson@roslin.ed.ac.uk"><span style='color:blue'>trevor.paterson@roslin.ed.ac.uk</span></a></span><span style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:EN-GB'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Arial","sans-serif";color:navy;mso-fareast-language:EN-GB'>Bioinformatics <br>The Roslin Institute<br>Royal (Dick) School of Veterinary Studies<br>University of Edinburgh<br>Easter Bush<br>Midlothian<br>EH25 9RG<br>Scotland UK<br><br>phone +44 (0)131 651 9157<br><br><a href="http://bioinformatics.roslin.ed.ac.uk/"><span style='color:blue'>http://bioinformatics.roslin.ed.ac.uk/</span></a></span><span style='font-size:12.0pt;font-family:"Times New Roman","serif";color:black;mso-fareast-language:EN-GB'><br></span><span style='font-size:10.0pt;font-family:"Times New Roman","serif";color:navy;mso-fareast-language:EN-GB'><br></span><span style='font-size:12.0pt;font-family:"Arial","sans-serif";color:green;mso-fareast-language:EN-GB'>Please consider the environment before printing this e-mail</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:EN-GB'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><i><span style='font-size:10.0pt;font-family:"Times New Roman","serif";color:navy;mso-fareast-language:EN-GB'>The University of Edinburgh is a charitable body, registered in Scotland with registration number SC005336</span></i><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy;mso-fareast-language:EN-GB'><br><b>Disclaimer:This e-mail and any attachments are confidential and intended solely for the use of the recipient(s) to whom they are addressed. If you have received it in error, please destroy all copies and inform the sender.</b></span><span style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:EN-GB'> <o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>