Moles occur when cells in the skin grow in a cluster instead of being spread throughout the skin. These cells are called melanocytes, and they make the pigment that gives skin its natural color. Moles may darken after exposure to the sun, during the teen years, and during pregnancy.
A pedigree chart is used to show your family tree of traits. An example is if a diagram shows your mom who had brown hair and your dad has red hair and then it shows all of th â¦ e children they had and shows what color hair they had.
Moreover, the finest dog pedigrees can be created and printed. ZooEasy dog pedigree software has clever and easy to use search options, allowing you to select the most compatible dogs for breeding, based on temperament, health or beauty characteristics.