I suspect that the youtuber got his information from one of several essays by former geneticist Jeff Tomkins at the ICR (one example can be seen
here). He makes the same basic clams. He sometimes refers to an upcoming actual research paper, but as far as I know, it is still forthcoming.
I have not delved into this issue much, but I am not that impressed with Tomkins' previous genetics-related essays at ICR. Despite having been in the genetics department at Clemson for a time, many of his essays that I have read contain errors - and really basic errors, things that someone with a degree in Genetics should not be making. I would be careful when looking into Tomkins' stuff, for his 'credentials' do not impart the expertise that they should.