588
Simples.
(lemmy.world)
Welcome to /c/tumblr, a place for all your tumblr screenshots and news.
Keep it civil. We're all people here. Be respectful to one another.
No sexism, racism, homophobia, transphobia or any other flavor of bigotry. I should not need to explain this one.
Must be tumblr related. This one is kind of a given.
Try not to repost anything posted within the past month. Beyond that, go for it. Not everyone is on every site all the time.
No unnecessary negativity. Just because you don't like a thing doesn't mean that you need to spend the entire comment section complaining about said thing. Just downvote and move on.
Sister Communities:
/c/TenForward@lemmy.world - Star Trek chat, memes and shitposts
/c/Memes@lemmy.world - General memes
To oversimplify, every human has an X chromosome and it is necessary to survive. The Y chromosome is optional and codes for some additional traits that make a person male. Chromosomes aren't foolproof and genes and in some cases entire chromosomes can essentially be turned off. However, since we have two of each chromosome this is often not a problem. So, if parts of the Y chromosome turn off, you potentially turn off the mechanisms that make a person male. In which case the person would remain the default of female.