美国学者宣称现代人类线粒体DNA可能来自20万年前一位非洲妇女,这就是“线粒体夏娃理论”。但有学者指出了此理论的不完善性,虽然分子钟可以用来确定古DNA序列的分化时间,但分子钟的运动并不是普遍匀速的,每一特定的分子序列都有独特的进化曲线,所以说人类的进化是一个复杂的过程。 American scholars claim that modern human mitochondrial DNA may come from an African woman of 200,000 years ago. This is “the theory of mitochondria Eve”. However, some scholars pointed out the imperfection of this theory. Although the molecular clock can be used to determine the differentiation time of ancient DNA sequences, the movement of molecular clocks is not generally uniform. Each specific molecular sequence has a unique evolution curve, So human evolution is a complex process.