The odds of knowing your cousins: 23andme Part 1

"First of all, we are friends with Anne, the founder of 23andMe. I did some consulting for them and got in as a free customer."<p>I find a small issue with this disclosure pushed almost all the way to the end of the post. It even somewhat seemed worse than not mentioning it at all, as I had already had the information from the post, and <i>then</i> possible bias was bought into play.

I'm curious if knowing cousins is more likely if the amount of children is smaller.<p>Such as on my mothers side families often consist of 4-7 children for each couple, like my mom is one of six, and I don't really know any 3rd or even 2nd cousins; however on my fathers side families usually consist of 1-3 children and I actually know almost all my 2nd cousins and some 3rd cousins.<p>This may be a little off topic considering the subject is on dna relations though.