Question

when a nitrogenous base is eliminated from the sequence it is known as which type of mutation? duplication deletion frameshift insertion

Explanation:

• Duplication involves copying a segment, not eliminating a base.
• Deletion is defined as the removal (elimination) of a nitrogenous base (or segment) from a DNA/RNA sequence.
• Frameshift mutation is a result of insertion or deletion (not the act of elimination itself, but a type of mutation caused by it in some cases, but the question is about the act of elimination).
• Insertion is adding a base, opposite of elimination. So the mutation where a nitrogenous base is eliminated is Deletion.

Answer:

B. Deletion