Help pls

the correct answer should be B

Answer is (d)

As according to the punnet square , the 3 have black hair and 1 has white .

Thus its 75% black and 25% white

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:

the denominator has a very specific role.