Arrangement of $DNA$ has the triplet base sequence $AAC\ GAC\ AGC\ GGC\ ACA\ AAA$. Due to mutation, the first base only got deleted. Then the likely effect of this on the coding of the $DNA$ segment is that

Which one of the following group of codons is called as degenerate codons ?

Which one of the following pairs is correctly matched with regard to the codon and the amino acid coded by it

How many amino acids will be coded by the $mRNA$ sequence $-5$ $'CCCUCAUAGUCAUAC3'$ if a adenosine residue is inserted after $12^{th}$ nucleotide?

Mutations which alter nucleotide sequence within a gene are called