Question

Say you have a mature, but still naive B cell. Ifone of the BCRs has a variable domain of the light chain encoded by V segment seventy six and J segment two, would you expect all of the BCRs to have the light chain encoded by the same segments? Further going off this information, would the variable domain of the Heavy Chain be encoded by the same V segments?

Lastly, would this cell already have rearranged genetic material that codes for both v domains of heavy and light chains? What about for heavy chains as well?