Which of the following amino acid replacements would be expe

Which of the following amino acid replacements would be expected to have the highest frequency among mutations induced by 5-bromouracil?

Met > Leu

Met > Lys

Leu > Pro

Pro > Thr

Thr > Arg

The highest frequency will be for proline to Thronine

Because they having difference of only one base for there all four codons

Proline- CCT, CCC, CCA, CCG

Threonine- ACT, ACC, ACA, ACG