The first thing you need to do is to look at the genetics of the two children and see if they are the same, but there is a big difference in their looks. The parents-to-be are always very concerned about the genetics of their children. What are some of the interesting questions that people have about looks? Let’s take a look: Question 1: Why do people around me say that the baby looks like his uncle? Baby’s genetic factors are 50% from mom and dad’s siblings, so it is normal for babies to look like their aunts, uncles or aunts as part of their genetic factors. If people feel that the baby looks like an uncle or aunt, it may be that the baby just inherited the more obvious characteristics of adults. Question 2: My sister’s twin sons look different, mine are also twins, will they also grow differently? Identical twins look very similar; while dizygotic twins look different. Genetically, half of the genetic factors of two babies are the same, so the physical features will be the same or not. Question 3: Will the size, shape, height and other characteristics of the parents’ nose be passed on to the baby? In fact, this is a rather complicated idea. The characteristics of the nose are all dominantly inherited; there are wide and high, low and curved, some noses will be pill-shaped, or the relatively rare low concave nose, etc. are all types of genetic factors. Question 4: Is it easier to inherit double eyelids from parents or single eyelids from their babies? It is normal for parents to pass on their double eyelids to their babies, because single eyelids are invisible genetics and double eyelids are dominant genetics. If both parents are single-eyed, the baby will generally be single-eyed. If both parents are double-eyed, the baby is normally double-eyed, but do not exclude some are also single-eyed.