$(30$ points$)$ Missense Mutation Function

a$.$ Write a function that takes three arguments: an RNA sequence, a codon$-$aminoacid dictionary and a point mutation on RNA

b$.$ The function should call the function you wrote in Q$1$c to convert the RNA sequence to aminoacid sequence $($conversion can run either on whole sequence or a part of it$)$

c$.$ Then function should return the index of the aminoacid effected by the mutation and if the mutation changes the aminoacid that is coded by the codon $($missense mutation or not$)$

Note: Mutation information should be provided as follows:

$r\mathrm{.}123A>G,($on RNA, A in position is $123$ is replaced by $G)$

p$.$Pro$252$Arg $($on protein, proline at position $252$ is replaced by arginine$)$