How do the chimp and human chromosome numbering schemes compare?
Response: The following table shows the mapping of chromosomes in the chimp draft assemblies to human chromosomes. Starting with the panTro2 assembly, the numbering scheme has been changed to reflect a new standard that preserves orthology with human chromosomes. Initially proposed by E.H. McConkey in 2004, the new numbering convention was subsequently endorsed by the International Chimpanzee Sequencing and Analysis Consortium. This standard assigns the identifiers “2a” and “2b” to the two chimp chromosomes that fused in the human genome to form chromosome 2 and renumbers the other chromosomes to more closely match their human counterparts. As a result, chromosomes 2 and 23 (present in the panTro1 assembly) do not exist in later versions.
