Question

In dogs, gum coloration is co-dominant, with black coloration,

Answer 1

Answer:

The phenotype of the sneaky neighbor dog will be pink. Let's consider the phenotype of our spotted gummed Labrador to be CPCB and neighbors dog to be CPCP

          CP          CB

CP     CPCP       CPCB

CP     CPCP      CPCB

The results of this cross show that there will be a probability of having pink dogs as well as spotted dogs. Hence, this proves that the neighbors dog had pink gums.