If you know which breeds your crossbreed has this helps you look at behaviour. You need to know a bit about how your dog works and genetics help you work that out. you can easily research your breeds.
If you don't know your breeds then the behaviour may help you work it out. Some crossbreeds are multi breeds over a few generations, so we would look at what your dog does and is it natural or learnt behaviour.
Every dog is an individual and adjust your training for that dog!