That, and the fact that the region of chromosome 15 under scrutiny has two other nicotine-receptor genes in it, suggests the situation may indeed be more complex.
These proteins are encoded by genes that are grouped on a part of chromosome 6 called the major histocompatibility complex, or MHC.
这些蛋白是由位于6号染色体上的一段称为主要组织相溶性复合体基因，MHC编码的。
3
Bacterial artificial chromosome (BAC) libraries are the most convenient, reliable and widely used genomic libraries in genome research of organisms with highly complex genomes.