Question

1. a base sequence of the dna from a gene is shown. atc ggc ta due to a mutation, the base sequence was changed as shown. att ggc ta which type of mutation has occurred in the gene? deletion substitution insertion translocation

Explanation:

• Deletion: Removes one or more nucleotides. Here, no nucleotides are removed.
• Substitution: Replaces one nucleotide with another. In the original sequence \(ATC\ GGC\ TA\), the \(C\) in the first triplet (\(ATC\)) is replaced by \(T\) in the mutated sequence (\(ATT\ GGC\ TA\)).
• Insertion: Adds one or more nucleotides. No new nucleotides are added here.
• Translocation: Involves the rearrangement of parts between non - homologous chromosomes. This is not the case here as we are just looking at a simple base - pair change in a gene sequence.

Answer:

Substitution