What would Arwen's baby look like?

[Lord Elrond]

I don't believe the choice of the kindreds passed down to the third generation. Elrond had a choice. Arwen did not have a choice to be mortal she had a choice to remain with the mortals. She was an elf as were Elronds sons. Another point is that nowhere did it say that Elros's offspring had a choice. I belive that it was only Elrond and Elros that were given the choice and nowhere does it state to my knowledge that Elronds offspring were given the choice to be men or elves, there is debate as to what became of his sons wether or not they passed to the undying lands or not but not as to wether or not they were given a choice.