(kinda not PHP) but how do I make a radio button appear, but one being selected

[Mythic_Fr0st]

Heres my problem

I have 2 radio buttons, how do I make one appear

E.G

Male/female button

Male O female O

how do I make Male O radio button, appear selected? so you have to choose one

[NogDog]

Add the checked attribute to the INPUT element in question.