Sogin M L, Swanton M T, Gunderson J H, Elwood H J
J Protozool. 1986 Feb;33(1):26-9. doi: 10.1111/j.1550-7408.1986.tb05550.x.
We have determined the complete nucleotide sequence of the coding region of the small subunit rRNA gene of the hypotrichous ciliate Euplotes aediculatus. It is 1882 nucleotides long and contains several inserts not present in the small subunit rRNA genes of the hypotrichs Oxytricha nova and Stylonychia pustulata. A comparison of the sequences suggests that E. aediculatus is much less closely related to these other two hypotrichs than they are to each other. Although the gene sequence of E. aediculatus is drifting more rapidly than those of these other two species, its faster evolutionary clock is not enough to account for the degree of difference between them.
我们已经确定了腹毛目纤毛虫艾氏游仆虫（Euplotes aediculatus）小亚基rRNA基因编码区的完整核苷酸序列。它长1882个核苷酸，包含一些在新奥 Trichomonas nova 和 pustulata 小亚基rRNA基因中不存在的插入片段。序列比较表明，艾氏游仆虫与其他两种腹毛目动物的亲缘关系比它们彼此之间的关系要远得多。尽管艾氏游仆虫的基因序列比其他两个物种的序列漂移得更快，但其更快的进化时钟不足以解释它们之间的差异程度。
