我是搞分子生物学的，这些DNA证据我并不认同是杂交留下来的, 可能是人类在早期起源进化中有的群体保持了这些原始的DNA， 或在

往北迁徙过程中突变产生了这些DNA。

下面这篇文章说 在现在人类中没有发现任何Neanderthals 的线粒体DNA谱系，这么说现在人类只含有Neanderthals的部分核DNA 片段，如Neanderthals 真的当时和人类交配把DNA穿给了人类却没有把线粒体DNA 传给人类，难道只有男Neanderthals与女性人类交配，就没有女性Neanderthals与男性人类交配？这是不可能的。

这文章还说当时人类种群的遗传多样性比Neanderthals大的多，说明当时人类种群的数量比Neanderthals大的多，一个小种群的Neanderthals是如何能把DNA传给比自己数量大的多的几乎非洲以外的所有人类个体的？

http://humanorigins.si.edu/evidence/genetics/ancient-dna-and-neanderthals/neanderthal-mitochondrial-and-nuclear-dna

 

Fast Facts:

• Neanderthals are genetically distinct from modern humans, but are more closely related to us than chimpanzees are

• The Neanderthal and modern human lineages diverged about 550,000 years ago

• So far, we have no evidence of Neanderthal mtDNA lineages in modern humans

• Neanderthals were not as genetically diverse as modern humans were at the same period, indicating that Neanderthals had a smaller population size

• Neanderthal nuclear DNA shows further evidence of small population sizes, including genetic evidence of incest

• As technology improves, researchers are able to detect and analyze older and more fragmentary samples of DN

所有跟帖： 

• agreed, more likely mutations under selective pressures. --worldance-- ♀ (0 bytes) () 02/12/2019 postreply 20:42:27