Would Caitlyn Jenner still be considered a guy by rules of biology?

By absolute scientific facts, you cannot truly become a member of the opposite sex. It's a fact, don't allow politically correct people to tell you otherwise.

DNA, Chromosomes, chemicals, hormones, internal and external organs, brain function, you cannot change what you are born with, you can just warp the properties of it e.g. having a womb removed, having a penis gutted and stuffed, etc.

Bruce Jenner can live as a female all he/she wants, that's fine, but she is by no means a biological female and never will be. Don't let people kid you into thinking you can because truly, you cannot.

I'll cover all the bases here:

First to quickly outright answer the question directly: yes, absolutely yes, no question. Anyone who says otherwise does not understand biology.

That said, regarding social treatment, if they identify as female, they should be treated as such

If the government recognizes them as a female —which many/most governments do allow under certain parameters— then it is also an official thing, and under the law there is no difference between a biological female and a transgendered female despite the fact that they are biologically different.

Eww, that's f*cking disgusting. Why the f*ck would you simply say Cut off your genitalia... what a sad b*tch.

Imma make this simple.

She is a girl.

She has girl parts because she identifies as a girl.

Even if she had "boy parts", she would be a girl.

It's her penis, she's identifying as female, it's a girl's penis.

You dont just cut off your genitalia, SRS is very complicated.

You dont just get implants, estrogen gives you boobs. You only get them if you want them, same with women. It doesnt make you more female.

In the end, it isnt the body that makes the gender. It's the brain.

Again as a subject? Leave this person alone.

'It' will always be a man .. who has decided to visit women's restrooms when ever he wants , and gets aaway with it because everyone has flunked plumbing 101 classes .

Bruce Jenner is now what is commonly termed a "shemale." That is, he has had breast implants, and taken female hormones, but he still has his male genitalia. Bruce has not made any definite comments about whether or not he will stay a shemale. Shemales enjoy being able to have an erection as they masquerade around as women, that is why they don't have their weenies cut off.

As you can see transphobic assholes have taken over the LGBT tag when it should be for those who are questioning and an accepting place.

Caitlyn Jenner, PHYSICALLY is a guy until she does all her surgeries - especially bottom surgery. There is technology now and will be that can perfect bottom surgery for those who are ftm and mtf.

These people obviously have not looked into a psychology book or history book. People who are transgender have been around for CENTURIES.

Also once one has completed bottom surgery they can legally change their sex as well.

People have problems with people being comfortable with themselves - shows how close minded one can be.

Also those stating that all females can produce, females at birth can't all produce so your "facts" are a little off.

Depends on how you define "male and female."

Caitlyn is still biologically male. That can't change.