Question about "Levels?"

[Morgaine Soulstar]

I was at an auction yesterday and it raised one big question for me:

It was stated that a particular fur was able to pass traits easier, or more readily pass them to it's OS.

Is this actually true??? Because in looking at Saga's Charts it all seems to be dominate vs recessive, it is a simple case of picking dominate or recessive traits and breeding those two cats together. I found this very confusing and just wanted some clarification. I am new to KC and just want to make sure I am understanding the breeding process.

Thanks!!