though scientists previously believed that domestic dogs evolved from canis , the gray wolf, genetic analysis indicates they actually evolved from a now extinct species.

image result for describe the various types of gene mutationsghr.nlm.nih.gov

the types of mutations include: missense mutation: this type of mutation is a change in one dna base pair that results in the substitution of one amino acid for another in the protein made by a gene. nonsense mutation: a nonsense mutation is also a change in one dna base pair.

explanation:

a bird that nests only in a particular tree species.