赛克斯解释了遗传学与人类进化的原理，线粒体遗传学的特性，还有通过对古代dna的分析来寻找现代人类与史前祖先的遗传关系。
Sykes explains the principles of genetics and human evolution, the particularities of mitochondrial genetics, and analyses of ancient DNA to genetically link modern humans to prehistoric ancestors.
从遗传学角度讲，为了避免同一个细胞内不同的线粒体相互排斥，大多数生物都会选择系属同一个细胞的线粒体，通常是同一个雌细胞。
To avoid fights between genetically different mitochondria in the same cell, most species have arranged for their mitochondria to come from only one parent—usually the mother.
线粒体d NA作为理想的分子遗传标记已被广泛用于蟹类种群遗传学和进化遗传学的研究，并取得了许多有意义的结果。
Mitochondrial DNA as an ideal genetic marker has been successfully applied to the study of population and evolutionary genetics of crabs.
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