Science. 1985 Jun 21;228(4706):1446-8. doi: 10.1126/science.228.4706.1446.
The mitochondrial DNA's of two closely related cricket species (genus Gryllus) share a size polymorphism as evidenced by analysis of restriction fragment patterns. Moreover, 12 of 100 field-collected crickets are heteroplasmic, that is these individuals have more than one size class of mitochondrial DNA. No heteroplasmy for restriction site variation is observed. Intraindividual variation in cricket mitochondrial DNA provides a useful marker for studying the transmission genetics of mitochondrial DNA. Available data on patterns of variation in mothers and offspring suggest that random segregation of mitochondrial DNA variants does not occur rapidly in cricket germ-cell lineages.
两种密切相关的蟋蟀物种（属 Gryllus）的线粒体 DNA 存在大小多态性，这一点可以通过分析限制性片段模式得到证明。此外，在 100 只野外采集的蟋蟀中，有 12 只是异质的，也就是说这些个体拥有不止一种大小类别的线粒体 DNA。没有观察到限制位点变异的异质现象。蟋蟀线粒体 DNA 的个体内变异为研究线粒体 DNA 的传递遗传学提供了一个有用的标记。关于母亲和后代中变异模式的现有数据表明，线粒体 DNA 变体的随机分离在蟋蟀生殖细胞谱系中不会迅速发生。
