Can C Only Use If Else Statement For While Loop Array

Language C Only Can Use If Else Statment For While Loop Array

The first file ecoli.fa is a FASTA file which contains the DNA sequence data. Here is an excerpt from the file: >Chromosome dna_rm:chromosome chromosome:ASM584v2:Chromosome:1::1 REF AGCTTTTCATTCTGACTGCAACGGGCAATATGTCTCTGTGTGGATTAAAAAAAGAGTGTC TGATAGCAGCTTCTGAACTGGTTACCTGCCGTGAGTAAATTAAAATTTTATTGACTTAGG TCACTAAATACTTTAACCAATATAGGCATAGCGCACAGACAGATAAAAATTACAGAGTAC ACAACATCCATGAAACGCATTAGCACCACCATTACCACCACCATCACCATTACCACAGGT AACGGTGCGGGCTGACGCGTACAGGAAACACAGAAAAAAGCCCGCACCTGACAGTGCGGG CTTTTTTTTTCGACCAAAGGTAACGAGGTAACAACCATGCGAGTGTTGAAGTTCGGCGGT ACATCAGTGGCAAATGCAGAACGTTTTCTGCGTGTTGCCGATATTCTGGAAAGCAATGCC AGGCAGGGGCAGGTGGCCACCGTCCTCTCTGCCCCCGCCAAAATCACCAACCACCTGGTG GCGATGATTGAAAAAACCATTAGCGGCCAGGATGCTTTACCCAATATCAGCGATGCCGAA CGTATTTTTGCCGAACTTTTGACGGGACTCGCCGCCGCCCAGCCGGGGTTCCCGCTGGCG CAATTGAAAACTTTCGTCGATCAGGAATTTGCCCAAATAAAACATGTCCTGCATGGCATT AGTTTGTTGGGGCAGTGCCCGGATAGCATCAACGCTGCGCTGATTTGCCGTGGCGAGAAA ATGTCGATCGCCATTATGGCCGGCGTATTAGAAGCGCGCGGTCACAACGTTACTGTTATC GATCCGGTCGAAAAACTGCTGGCAGTGGGGCATTACCTCGAATCTACCGTCGATATTGCT GAGTCCACCCGCCGTATTGCGGCAAGCCGCATTCCGGCTGATCACATGGTGCTGATGGCA GGTTTCACCGCCGGTAATGAAAAAGGCGAACTGGTGGTGCTTGGACGCAACGGTTCCGAC TACTCTGCTGCGGTGCTGGCTGCCTGTTTACGCGCCGATTGTTGCGAGATTTGGACGGAC GTTGACGGGGTCTATACCTGCGACCCGCGTCAGGTGCCCGATGCGAGGTTGTTGAAGTCG ATGTCCTACCAGGAAGCGATGGAGCTTTCCTACTTCGGCGCTAAAGTTCTTCACCCCCGC The second file in the project folder is a CSV file named codon_table.csv which contains the codon list.

Here is an excerpt from the file: Codon AA.Abv < td>AA.Code AA.Name UUU Phe F Phenylalanine UUC Phe F Phenylalanine UUA Leu L Leucine UUG Leu L Leucine CUU Leu L Leucine In the above table, AA.Abv represents the abbreviation of the aminoacid, AA.Code represents the code for the aminoacid and AA.Name represents the actual name of the aminoacid. There are 64 codons in the file. One aminoacid can be represented with multiple codons, they all create the same aminoacid. For example, both UUU and UUC codons are translated as phenylalanine. Write a function transcribe(dna_string) that creates the mRNA string from the DNA string.

Each base in dna_string must be matched to its corresponding mRNA base. There might be strange characters in the DNA string other than A, T, C, G. They should be ignored: A U, T A, G C, C G matchings are the only valid ones. string transcribe(string dna_string){ //this function must take the DNA string and construct a new mRNA string //then return the mRNA string } Write a function translate which accepts the mRNA string as a parameter and creates a string vector of proteins. Each item in the vector is a string that consist of the aminoacid codes of the protein. The function must return the protein vector as a result.

Each protein’s aminoacid sequence starts with M (Methionine) which is the starting aminoacid and ends with a Stop aminoacid. So the function should: look for mRNA sequences that starts with AUG codon; detect the end (UAG, UGA, or UAA codon); in between, identify the corresponding aminoacids for the codons to construct the protein; save the protein string in the vector(Use push_back function). vector translate(string mrna_string) { //create a protein vector and return it. } Use the following print and main function to connect the processes and print the resulting protein vector void print_protein_list(vector list) { for(string line : list) { cout MDGTHLILKStop 1 -> MKLVISVSRVCLFLMSHVLStop 2 -> MVVVVVMVSIATPDCACPLCLFSGVDCHARKKKLVSIAPLLVRSQLQAAMStop 3 -> MGYSRYGLHKNGLKTALSGGGSAPRATALTFESSStop 4 -> MTIARPAFStop 5 -> MELRWQLStop 6 -> MRRRHDRRTNARLTTLStop 7 -> MDAGRSPRATLQQLQLQDGPSLPRKDEAAISRSGGVVMGVAGQGLGNGLIFMAFRSSWSMRVTTVGTTSAStop 8 -> MRStop 9 -> MSStop 10 -> MDLDFLPNDLGDRHCLADRStop 11 -> MSSLRQVMASPIASQTLTAATATATRRPRStop 12 -> MHRRHNGStop ....

Paper For Above instruction

The task involves processing and analyzing genomic data, specifically DNA sequences from the ecoli.fa FASTA file and codon-translation data from the codon_table.csv file. The goal is to transcribe DNA into mRNA, then translate the mRNA into protein sequences, adhering strictly to C programming constraints: using only if-else statements, while loops, and arrays. This exercise emphasizes fundamental programming skills, data parsing, string manipulation, and biological sequence translation within strict language limitations.

First, the transcription function, transcribe, converts a DNA string into an mRNA string. The process involves iterating over each character in the DNA string, filtering out any characters that do not correspond to valid DNA bases (A, T, C, G). For valid bases, each is matched to its complementary RNA base: A to U, T to A, C to G, G to C. The transcription is performed using only if-else statements within a while loop, storing the result in a dynamically allocated array (or a fixed-size array if predefined). This task requires careful handling to ignore any extraneous characters, headers, or whitespace in the input string, focusing solely on the nucleotide bases.

Next, the translate function converts the mRNA string into a sequence of proteins, respecting biological translation rules. It searches for the start codon, AUG, indicating the beginning of a protein. Once found, the function reads subsequent codons (groups of three bases) to identify corresponding amino acids. These are obtained from the codon table loaded into memory, typically stored in a 2D array or parallel arrays, enabling lookup based on the codon string. The translation continues until a stop codon (UAG, UGA, or UAA) is encountered, marking the end of the current protein sequence.

The function constructs the amino acid sequence string starting with 'M' for Methionine, appending the amino acid codes for each subsequent codon, and ending with the stop indicator. Each complete protein is stored in a vector using only array-based push-back methods (e.g., maintaining an index variable). The primary challenge lies in correctly parsing codons, matching them with amino acids, handling multiple start and stop sequences, and ensuring the use of only if-else statements, while loops, and arrays.

Finally, the program's main function integrates these steps, reading the input files, performing transcription, translation, and printing the resulting proteins. The output reflects the biological sequences derived from the DNA data, presented sequentially with their respective indices, illustrating the capabilities of C programming under strict constraints while processing real biological data.

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