Transcribing DNA into RNA

25 Oct 2023 in Study / Rosalind on Rosalind problem

A problem from rosalind “Bioinformatics Stronghold” category, String Algorithm

• A problem from rosalind “Bioinformatics Stronghold” category
  Rosalind Problem Link

• Description
  • Given DNA coding sequence, we should deduce the sequence of mRNA produced from this DNA sequence
• Input example : AGGCCTTAGGCAGT
• Output example : AGGCCUUAGGCAGU

Biological Background

• DNA sequences consist of 4 bases (A, C, G, T)
• RNA sequences consist of 4 bases (A, C, G, U)
• DNA consists of 2 strands
  • coding sequence : has same sequences with mRNA having information except T (should be changed to U)
  • noncoding sequence : complement version of coding sequence (A ↔ T, G ↔ C)

My Solution

DNA_seq = input()
RNA_seq = ""

for i in range(len(DNA_seq)):
    symbol = DNA_seq[i]

    if symbol == 'T':
        RNA_seq += 'U'
    else:
        RNA_seq += symbol

print(RNA_seq)

• just change T to U