brandoncarlo:

“If we wanna talk about biology like using tha as a defense for being transphobic is actually a thing. Let’s look at something. I actually wrote a paper on trans athletes in sports and was direct to this article by my professor when i started writing it. But people don’t click on links that prove them wrong so here’s some excerpts:

• “The public is by now used to the idea that sex is biological while gender is a social construct. But where in our biology does sex reside: in our genes, in our genitals, in our hormones? And is it even possible to separate biological sex from the environmental influence of gender?“
• ““It is very difficult to come up with an absolute line,” says Arthur Arnold, distinguished professor of integrative biology and physiology at the University of California Los Angeles“
• “They found that other genetically male (XY) women had a double dose of a gene on the X chromosome, DAX1, that antagonizes male development, even if SRY is working. Then they found WNT4, another “anti-male” gene on the X chromosome that, if over-expressed, overwhelms the “pro-male” SRY. Rather than a singular bully that “imposed” masculinity, sex differentiation began to look more like a negotiation.“
• “But the coroner actually found that Walsh’s cells were mismatched: some carried XY chromosomes, and some carried chromosomes with one X,“
• “Walsh had mixed chromosomes, mixed internal sex organs and mixed external genitalia. As for her gender identity, the coroner, Samuel Gerber, offered his own assessment. “Socially, culturally and legally, Stella Walsh was accepted as a female for 69 years. She lived and died a female.”
• “Martinez-Patino has androgen insensitivity syndrome. Her chromosomal sex is XY and she has male internal sex organs, but a genetic mutation means her androgen receptors don’t work….She developed as a typical female, and she and her family never doubted her gender..”
• “But no study has ever shown that performance — say, finishing times in a race — correlates to athletes’ levels of testosterone. Testosterone is a complicated, dynamic substance: finishing a marathon causes it to plummet in men, while positive feedback from a coach can cause it to shoot up.“
• “In one study of nearly 700 Olympians participating in 15 sports, 13.7 per cent of women had natural testosterone levels above the typical female range, 4.7 per cent were within the male range, and 16.5 per cent of men had levels below the typical male range…if hyperandrogenic women are overrepresented in elite sports, they themselves are still vastly outranked by female athletes who are winning with typical hormones.”
• “there is little evidence that synthetic or “exogenous” testosterone behaves the same way as natural or “endogenous” testosterone“

I highly suggest reading the whole article but there’s your “biological sexes” analyzed by actual professionals who have studied this stuff. Because saying trans women have an unfair advantage is inherently transphobic. I don’t care what your reasoning is. If you see it as outsiders invading womens spaces you are transphobic. 

Trans women are women! i know we say it a lot now but instead of wondering how they’r harming women, instead of arguing that it’s sexist to support trans women in womens sports, consider that they’re just fucking women who want to live their lives and have fulfilling careers. Instead of going “hmm they have an unfair advantage based on the fact i didn’t actually research this” consider that they are WOMEN just as woman as someone who identifies that way and has a uterus. It’s not unfair because they belong just like everyone else. If they are successful then they’re a successful female athlete done and done. end of story. 

Cis women, there’s a lot of shit in the world out to get you, i feel that, but trans women are NOT one of them.