Question

4 which of these shows an example of an insertion mutation? a r s t u v x y z → s t u v x y b r s t u v x y z → r s t v x y z c r s t u v x y z → r u t s v x y z d r s t u v x y z → k l r s t u v x y z

Explanation:

An insertion mutation adds one or more nucleotides into the DNA sequence. In option D, two new nucleotides 'KL' are added at the beginning of the sequence, which is an example of an insertion mutation. Option A is a deletion mutation (a nucleotide is removed), option B is a substitution mutation (one nucleotide replaces another), and option C is a transposition - like mutation (re - arrangement of nucleotides).

Answer:

D. RSTUVXYZ → KLRSTUVXYZ