Question

Point mutations affect DNA's

• A. Phosphate group
• B. Base molecule
• C. Sugar molecule
• D. All of the above

Answer 1

Answer: (B)

Base molecule

A point mutation, or single base substitution, is a type of mutation that causes the replacement of a single base nucleotide with another nucleotide of the genetic material, DNA or RNA. The term frameshift mutation indicates the addition or deletion of a base pair. Point mutations are always more deleterious. A point mutant is an individual that is affected by a point mutation. Repeat induced point mutations are recurring point mutations.