Figure 1.

(A) Location of amelogenin (AMEL) on human chromosome X. (B) Homologous region on chicken chromosome 1 and the putative location of AMEL. In chicken, HCCS is located on chromosome 8 (LOC424482). ARHGAP6 exon 2 is indicated by the numeral 2. Gene descriptions corresponding to the symbols can be found at the NCBI web site: http://www.ncbi.nlm.nih.gov/ webcite.