Semnae

I have a few questions about bone marrow that I can't seem to find answers to through a simple Google search.

1. How is bone marrow created?

2. What is the average apoptotic rate of bone marrow?

3. If a person is given a full bone marrow transplant, will that person's body naturally replace the donated cells with cells of his own genetic make up, or will the bone marrow forever consist of cells with the donors genes?

Thanks in advance.