If a child is 50% DNA from either parent, why can it look like it has all features from only one side?

Question

If a child is 50% DNA from either parent, why can it look like it has all features from only one side?

In: Biology

Answer 1

You say “all features”, but you don’t usually recognize people by more than a few particularly distinctive features. That’s why you can often recognize people by seeing only the top or bottom half of their face.

If a child has the same distinctive mouth and face shape or whatever features you associate with one parent, and his other features are less distinctive, you might see that child as looking completely like that one parent.