Newbielurker t1_ishsy9d wrote on October 16, 2022 at 2:20 AM

Reply to comment by G1CUL in TIL: Sperms were thought to move by wiggling their tails side-to-side, like eels, for 350 years. But research shows that they roll as they move forward like a spinning top. by vect77

I think I’ve read the same thing, but if I recall correctly there’s a few clarifiers needed.

Two thirds of paternity tests show not the mothers husband. This is not a representative study of all parents- because most don’t seek paternity tests unless there were doubts already. And apparently two out of three times doubts were warranted

KamikazeArchon t1_isinmvy wrote on October 16, 2022 at 7:36 AM

Your clarifications are correct, but also, the 2/3 is the other way around. 2/3 of paternity tests are "positive", confirming the paternity to the mother's husband/partner. 1/3 are "negative".