Question

If the sequence ATGCATGTCAATTGA were mutated such that a base were inserted afterthe first G and the third T were deleted, how many amino acids would be changed in the mutant protein?
None.
Two.
One.
Three

Answer 1

Answer:

Two

Explanation:

Original sequence is ATGCATGTCAATTGA

Any base inserted after first G and

Third T were deleted so

Mutated sequence becomes ATGNCATGCAATTGA

N represents any nucleotide i.e A, G, C, T

Amino acids that should be changed in the mutant protein are

CAT for Histidine in Original sequence while

NCA encodes any one of them Serine or Threonine or Proline or Alanine

GTC for Valine in Original sequence while

TGC encodes Cysteine in mutated sequence

all other amino acids remains the same

Correct answer

Among five amino acids only two amino acids will be changed in mutant protein