《英文msh詞典》Multigene Families
[入口詞] Multigene Families
[主題詞] Multigene Family
[英文釋義] A set of genes descended by duplication and variation from some ancestral gene. Such genes may be clustered together on the same chromosome or dispersed on different chromosomes. Examples of multigene families include those that encode the hemoglobins,immunoglobulins,histocompatibility antigens,actins,tubulins,keratins,collagens,heat shock proteins,salivary glue proteins,chorion proteins,cuticle proteins,yolk proteins,and phaseolins,as well as histones,ribosomal RNA,and transfer RNA genes. The latter three are examples of reiterated genes,where hundreds of identical genes are present in a tandem array. (King & Stanfield,A Dictionary of Genetics,4th ed)