The present invention relates to a human artificial chromosome which is genetically transmissible to the next generation with high efficiency and the method for using the same. More specifically, the present invention relates to: a human artificial chromosome in which an about 3.5 Mb to about 1 Mb region containing an antibody lambda light chain gene derived from human chromosome 22 is bound to a chromosome fragment which is transmissible to a progeny through a germ line of a non-human animal, said chromosome fragment is derived from another human chromosome； a non-human animal carrying the human artificial chromosome and an offspring thereof； a method for producing the non-human animal； a method for producing a human antibody using the non-human animal or an offspring thereof； and a human antibody-producing mouse carrying the human artificial chromosome. <；IMAGE>；
