Does anyone know the genetics behind the bleeding disorder von willebrand's? which parent(s) pass it to you?

Both can transmit: Von willebrand disease, the most common hereditary bleeding disorder, is one of autosomal dominant disorders.

Either parent: There are many types of vwd. The most common is type 1, and it is autosomal recessive. This means that you can receive it from either parent. If you have it, you will pass it on to your children 50% of the time.

Correction: I agree with dr. Ball's answer, but the inheritance pattern he described is autosomal dominant. Autosomal means you can get it from either parent; dominant means only one parent needs to give it to you for you to get it. The rare, severe type 3 VWD is recessive; both parents need to pass on an abnormal gene for one to get it.