Can you breed a shiny Pokemon and a non-shiny Pokemon to get a shiny baby?
In the second generation, you had a 50% chance of getting a
shiny Pokemon this way, but in the 3rd generation onwards, chances
were decreased and you did not have a better chance of getting a
shiny Pokemon by using this method.
Additionally, you won't know if the baby Pokemon will be shiny
until it hatches because eggs containing shiny Pokemon do not look
any different from eggs that contain non-shiny Pokemon.