Non-sister chromatids of homologous chromosomes may exchange segments over regions of homology.

同源染色体的非姐妹染色单体可以同源区域交换片段。

And so continuity implies common ancestry or homology.

因此，连续性意味着共同的同源性。

In tracing the homologies of any part in different members of the same class, nothing is more common, or, in order fully to understand the relations of the parts, more useful than the discovery of rudiments.

同一纲不同成员的任何部分的同源性时，没有什么比发现胚芽更常见， 者，为了充分理解各部分之间的关​​系， 更有用的了。

Next, homologies or those are characteristics organisms have that show common ancestry.

接下来是同源性，即那些显示生共同的特征。

How inexplicable are the cases of serial homologies on the ordinary view of creation!

用普通的创造观来看， 连续同源的情况是多么令人费解啊！

Homology or homologous means that they come from the same ancestry.

同源性同源意味着它们源自相同的。

So they show homology through evolution.

所以它们通过进化显示出同源性。