Can you choose the biomes for a Minecraft realm?

I want to get a Minecraft realm, but I don't know if I can choose the type of biome or not. I have a specific idea in my head of what I want my realm to be like, but I don't know if I can choose the biome like in single player mode new worlds or not. Can I?

You can't configure the Realms world itself, however there is a workaround.

choose the biome like in single player mode new worlds

It looks like you already know how to do that on a Single Player world. You can create the desired Single Player world and upload it to Realms as follows:

1. Click on Minecraft Realms.
2. Select the Realm and click on Configure.
3. Click on one of the three Worlds to select it.
4. Click on the Reset button.
5. Choose a local Single Player world to upload.

The realms server will then follow the generation settings from the SP world.