The following corresponds to python programming, will upvote, thx.

1) Python string is immutable. You cannot change an existing string. The only way is to make a new string. However, we need to change some letters in a sequence, for example, to simulate mutations. Write a function simulating mutation. It receives a sequences, a mutation position, and a base letter to replace the existing base. This function returns a new string containing the mutated sequence.

a) WRITE AND INCLUDE THE COMPLETED CODE AS INDICATED BELOW.

# Complete the following function. # DO NOT CHANGE THE FUNCTION NAME AND ARGUMENTS!!! # Hint: You cannot change an existing string. Therefore, you must make # a new string that contain the mutation, and return this new string. def mutate_seq (seq, pos, base) # The following code is provided for your test. # You can modify it as you want, to test your function. seq = 'AAGCCTTGTTC' mutated_seq mutate_seq(seq, 4, 'A') print(sq) print(mutated_seq)