During the 1950's, several scientists were responsible for discovering the structure of dna. one scientist, erwin chargaff, found that in dna, the ratios of adenine (a) to thymine (t) and guanine (g) to cytosine (c) are always equal. which model best represents chargaff's rule?

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:

answer; ///stratum basale///stratum spinosumstratum granulosumstratum lucidumstratum corneum; 2,1,5,4,3