三、染色体的 结构和组成 原核生物 (prokaryote) Figure 10-23 DNA Released from the Nucleoid of a Ruptured Bacterial Cell Tbe DNA forms a series of loops tbat remain attacbed to a structural framework witbin the nucleoid.Note tbe similarity to tbe organization of eukary- otic DNA,wbicb forms long loops attacbed to a nonbistone protein scaffold (see Figure 10-19).Courtesy of Dr.Gopal/ SPL/Pboto Researcbers