Pokemon Gold Silver Crystal – How to Get a Chansey Level 5 with Defense Curl in GSC?

So, here's what I've managed to find out on my own:

1- With the Transfer Pak connected, there is another section added to the Pokemon Selection screen when you are preparing a Free Battle, which allows you to enter and register a team from your Gameboy Color game (it grants instant access to every legal option in your party and all of your boxes).

2- As mentioned above, you can register a team from your Gameboy Color game. This allows you to plug in your game, register your team, turn the N64 off, plug in your friend's game, register their team, and so on, allowing multiple people to play with their Gameboy Color teams without requiring multiple Transfer Paks at once. However, from what I can tell, you can only register teams for games using Preset Rules; if you're using a Custom Ruleset, you cannot register a team.

Yes, shiny parents are more likely to produce shiny offspring in generatation 2. The chance is 1/64 in any of the following cases:

• Both parents are shiny
• One parent is a shiny Ditto
• One parent is shiny, the other is not Ditto, and the child is the opposite sex of the shiny parent

This is due to the way stats are passed down. IVs, which are responsible for shininess, are partially inherited from the Ditto parent if a Ditto is involved, or from the opposite parent if not, i.e. a male baby will inherit based on its mother's IVs.

Since a shiny pokemon has, by definition, the correct IVs to be shiny, inheriting those stats increases the chance of being shiny.

The maths itself, and the 1/64 chance, can be found in this answer.