With so called tardigate, there has been a lot of discussion recently about contamination as an explanation for evidence of horizontal gene transfer. Chris Wilson’s paper showed that inadvertent contamination explained a reported result of gene exchange between bdelloid rotifer individuals, using analyses of Sanger sequencing chromatograms that could be a useful general tool for exploring contamination.
The paper is here
and a comment is here
Note – this does not pertain to evidence that bdelloids have taken up lots of non-metazoan DNA – those results are robust to critical tests for contamination and have been confirmed now in multiple independent studies.