Hi /sci/ bio-bro here, I have always wondered why I am so different to my siblings. And no my mum did not cheat. While I share a lot of similarities with my siblings like chin and whatnot, there are a fuck tonne of differences, such as
>All my siblings are taller than me - all are 5'8 and 5'9 whereas I am 5'5 (only 1.5 inches taller than my dad)
>None of them grow near as much facial hair and bodyhair as me
>All of them except 1 is fat, me and that brother (looks most similar to me) find it hard to put weight on
>All of my siblings suck at sciences
>All of them suck at athletics and sprinting

I suspect it might be due to my mother living in an abusive household (as she claimed) when she was carrying me around in her womb, where she was not fed much and was practically starved. I also did not drink breast milk much as a child and struggled to have an apetite - remember having to be fed these weird vitamins to make me hungry.