My Kids Don't Look Related

You can't tell from looking at my kids that they are related to each other. My husband jokes about one or the other of them being the postal worker's kids. Other than one of my girl's eyes, they don't look like their dad at all. If he were a less secure man, he'd probably think I was out stomping on my marriage vows with some other man (or men). I know better because I take my vows seriously (and he better too, lol).

There isn't much of me in their features either. Whose kids are these? We are missing 1/4 of the genetic information for dad's half of their genes so that could account for it I guess, but geez...I wouldn't doubt people look at them and wonder, "whose their daddy?"