Which plant genus dominated glaciated regions during the late paleozoic and early mesozoic?

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:

i think that d. wind is the answer.   i missed the question when i answered a. currents.