Apparently it does affect the twin somewhat but nowhere near the amount it affects most other mammals. It might be because we take so long to develop and that sex differences aren't so huge at a younger age for humans? That's just a guess from me though.
Well, I got curious about the tetanus case so I just wanted to let you know the boy didn't die. He recovered completely, though he suffered for two months, and his parents still refused to vaccinate him after.
Yurekuu t1_j6k1jdr wrote
Reply to comment by Budget_Bathroom_1056 in TIL When a cow has opposite sex twins, the female twin is usually born intersex and infertile. This happens because the twins blood supplies are linked, which exposes the female to male sex hormones. by awawe
Apparently it does affect the twin somewhat but nowhere near the amount it affects most other mammals. It might be because we take so long to develop and that sex differences aren't so huge at a younger age for humans? That's just a guess from me though.