Question

句子成分分析？

There is a kind of false precision being hawking by people claiming they are doing ancestry testing

Answer 1

不是being hawking，而是being hawked吧。
being hawked 是kawking现在分词的被动词态，修饰precision。
there is a kind of false precision being hawked by people.
claiming 【that】 they are doing ancestry testing修饰people
这个句子也可以用以下三简单句来分述
There is a kind of false precision 又有一种伪严谨
The precision is hawked by people 这种严谨被人们极力鼓吹
The people claim they are doing ancestry testing. 这些人声称他们正在进行世系检定

Answer 2

这个句子的意思是：那些人们在街头叫卖的所谓祖先检测的说法是伪精准的。
成分分析：being hawking by people这个东西是用来修饰precision的，被人们所叫卖的东西是伪精确的。

Answer 3

复合句：there be句型+n.名词+being +v.动词ing+by（表被动）+从句（主语+v.动词ing+从句（主语+v.动词ing短语））