An organelle is a specialized structure inside Eukaryotic cells.
I’m going for real I haven’t done this because it was hard didn’t get it but now I know // ANSWER -
There is 50% probability that their daughter's son will have the disease, because daughter chromosomes are XX , and the X from father will have x- linked disease, now in next generation the son will have XY chromosomes, Y is from father and X will from mother, now mother have two "XX", out of these two one carry x- linked disease, that means 50 percent chances of having disease in son.
