Flexi Says: If you see the process of gametogenesis, four genetically unique haploid cells result from meiosis. One of these unique eggs from the mother combines with the unique sperm of the father to produce progeny. So everyone receives half of their chromosomes from their mother and half of their chromosomes from their father. And every half is unique for everyone. Chromosomes contain all the genetic information that makes you who you are. Some traits are dominant and others are recessive. Traits are expressed depending on which genes you received from each parent and whether the traits of these genes are dominant or recessive. If you look different from your parents and your siblings, it is the genes you received and how they are being expressed.