Dasyprocta Punctata Research Articles

The Occurrence of Three Recognized Color Mutations in Mice

To sum up the facts above recorded it may be stated that: 1. A previously recorded mutation of the gray-bellied agouti pattern, known as white-bellied agouti, has arisen in two experiments on color inheritance in mice. 2. In experiment A it has arisen independently three times in a hybrid race of mice. 3. In this experiment there has been no selection in the direction of the mutation. 4. In experiment B it has arisen once in an inbred race in which selection was being carried on. 5. In this race the mutation represents a variation in exactly the opposite direction from that in which the selection was being made. 6. A recessive pink-eyed mutation has occurred in a closely inbred dilute brown race. A similar mutation has appeared in a hybrid race into which one animal from the dilute brown race probably introduced the mutation. 7. A mutation involving loss or suppression of the black producing factor has arisen in a stock of inbred wild mice. This has caused the appearance of brown agouti young. 8. The wild...