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.
What's a Pedigree? Find tips and advice on what to look for and what questions to ask when buying a puppy from a breeder. If you're interested in purchasing a purebred puppy, the breeder should provide the puppy's pedigree before you make a commitment. I've heard of buyers being told that they can have the pedigree when they buy the pup.