You cannot change the gender of a Pokémon because it is set in stone, just like their abilities or natures, for example.
You can, however, breed the Pokémon in question with a Ditto, with Pokémon from the same egg-group(s) or with Pokémon of its evolutionary line (e.g., Charmander, Charmeleon and Charizard), as long they are of the opposite gender.
Please keep in mind that even though Baby Pokémon have a gender, they cannot breed whatsoever (e.g., Azurill, Pichu, Magby, etc).
no
I don't belive you can.
no
Yes you can trade leafgreen version Pokemon to another leafgreen version.
i don't believe there is, only the option to change character's gender
You cannot naturally change your Pokémon gender in Pokémon LeafGreen, you will need to such a cheating device such as a GameShark or an Action Replay in order to accomplish this.
no
I don't belive you can.
The Name Rater in a house in Lavender Town can change your non-traded Pokemon's nickname.
no
Yes you can trade leafgreen version Pokemon to another leafgreen version.
to change the gender release a Pokemon that can be caught in the wild, go where it was caught and you will find it same level, same moves, same exp points but the opposite gender.
No
i don't believe there is, only the option to change character's gender
You can modify your Pokemon's gender (and everything else) by using the PokeSav program.
you breed them on four islands after beating the elite four but you need a boy and a girl or any gender and a diddo answered by ..::Seth::..
Not in Pokemon leafgreen only in Pokemon Firered never ever in Pokemon leafgreen And in Pokemon firered it is rare in power plant not available in Pokemon leafgreen?