The reliability of the information can be described as good because it is based on "<span>multiple research papers done by scientists at veterinary schools". There are two main points that make of the information a reliable one. Firstly, the researches were carried by scientists at veterinary schools, in other others, experts in the matter. And secondly, the information was based in multiple, not just one or a few, research papers that in order to be published are revised and only then accepted for publication. </span>
Image shows answer, obtained from google.
This was because one cannot view a single strain of DNA as it is too small for one to visually comprehend.