They appear to have a mixture of prokaryotic and eukaryotic genes. 它们被认为是某些真核生物基因和原核生物基因的混合体。
According the traditional concepts, the eukaryotic chromosomes are linear and the prokaryotic chromosomes are circular. 传统的生物学观念认为真核生物的染色体是线状的,原核生物的染色体则是环状的。