Which is the best representation of a nucleotide substitution?

Question

Quizplus · Accepted Answer

A nucleotide substitution refers to a single nucleotide being replaced by another. Option B represents the best example of a nucleotide substitution because it describes a mutation where one nucleotide (T) is replaced with another nucleotide (C) and this mutation becomes fixed in the population over time, reaching 100 percent frequency. Option A describes a mutation that is quickly lost from the population, so it is not a good representation of a nucleotide substitution. Option C describes an insertion, not a substitution, and Option D describes sequence length differences, which may or may not involve nucleotide substitutions. Option E describes a gene duplication event, which is not a nucleotide substitution.

Which Is the Best Representation of a Nucleotide Substitution