Selective Breeding

Question I am answering: how can selective breeding change the genetic makeup of dog breeds and other species?

The selective breeding that finds public favor in groups of breeders is a combination of a few mature mutations, such as achondroplasia or the genetic mutation, and minors genes. This breeding can change the genetic makeup of dog breeds by means of genes that change the allometric growth relationships between the parts of dog’s body. This results in changes of size and shape. For instance, when a Poodle breeds with a Labrador, the result of this breeding is a Labradoodle, which is changed in size and shape. That also means mating with two different breeds can make various breeds of dogs. It does not only change in the body shapes,