A Genetics Lesson

We were at Edna's cabin the other night, helping to get a few things done before the cold weather hits. I saw that she had hung these pictures of her kids on the wall. I have loved these pictures, and we've always had fun seeing the family resemblances in our own children to their aunts and uncles.

For example:
I think these two cute nephews look a lot like their Uncle Bruce:

What do you think?

 I think they could be brothers.