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

Let’s say you have 50 random coin flips. Only three of those affect appearance. If those three come up tails, the kid looks mostly like the tails-side parent. Now, the numbers are way larger and more complex than that but it gets the idea across. Only a few of the total coin flips involve appearance.