Why do people with Down Syndrome have that same “look” to them?

Question

Why do people with Down Syndrome have that same “look” to them?

In: 3056

Answer 1

Not just DS. What used to be called fetal alcohol syndrome (permanent effect on the child when a pregnant person dranks alcohol) has very marked physical features on the child, often on the shape of the ears.

Edit: drinking while pregnant causes a lot more damage to the child than physical defects and abnormalities so please don’t.