Answer: The correct answer for the fill in the blank is Deletion mutation.
Mutation is defined as the permanent change in the genetic material of an organism.
Deletion mutation is a type of mutation in which there is a loss of one nucleotide or a sequence of nucleotide from the genome. It can occur during the replication of DNA where the enzyme DNA polymerase skips a particular nucleotide or a sequence in the template DNA strand, leading to the loss of the nucleotide in the new DNA molecule.
As per the question, the sequence of original DNA is CGA TGG CCA TTA and mutated DNA is CGA GG CCA TTA.
There is loss of nucleotide T ( that is present at fourth position in the original DNA) in the mutated DNA.
Thus, this is a deletion mutation.
