Not all the time. Some look like their mom some like their dad and some can have features of both parents, and not really look like one or the other. I look more like the females in my dad's family. My moms family is all girls and have strong american indian features, plus they are all 5 foot or shorter. I look like my dad's family because I am taller, I have more of the irish features, like fair skin, and I don't have any american indian features. I wish I had my mom's skin though, she stays tan naturally year round.
They can look like their mother or father. I, personally, have most of my father's traits and very little of my mother's. The only time a child definitely looks like a parent is the first few months of life, as babies are designed to look more like their fathers to establish biological paternity. After that, the person can look like one, the other, a combination, or even have features that have skipped several generations in the family.
i get told I look like both my mom and my dad like I have her eyes and her face shape, people ask if we are sisters and guys are always creeping on her , she's pretty though not gonna lie so I wouldn't feel that bad if I did and I guess its somewhat true