Genetic Code and Mutations Quiz

Genetic code is described as ‘degenerate’ because

• Each codon codes for multiple amino acids

• More than one codon can code for a single amino acid

• Each amino acid is coded by only one codon

• All codons code for start signals

Which amino acid has only one codon?

• Valine

• Leucine

• Methionine

• Serine

The start codon for translation in eukaryotes is

• UGA

• AUG

• UAA

• UAG

Wobble hypothesis explains

• Initiation of translation

• Termination of translation

• Third base flexibility in tRNA pairing

• Protein folding

According to Wobble hypothesis, the ‘wobble’ occurs at

• 1st position of codon

• 2nd position of codon

• 3rd position of codon

• 4th position of codon

A point mutation involves

• Insertion of a base

• Deletion of a base

• Substitution of one base

• Inversion of bases

Which mutation leads to complete shift in reading frame?

• Silent mutation

• Missense mutation

• Frameshift mutation

• Point mutation

A silent mutation results in

• Stop codon

• Change in amino acid

• No change in amino acid

• Frameshift

Which of the following is an example of a missense mutation?

• Sickle cell anemia

• Phenylketonuria

• Thalassemia

• Alkaptonuria

Protein folding is aided by which class of proteins?

• Ligases

• Chaperones

• Proteases

• Kinases