I am new to bioinformatic analysis of nucleotide sequences. I have several NGS nucleotide sequences (virus) coming from patients, that i need to align and perform a phylogenetic analysis. I would like to know in steps how to proceed to build a multiple sequence alignment: choice of sequences to add to my alignment, should i include the blast results or just use blast to determine the genotypes, should i include old or new sequences, extract sequences from other publications or search pubmed for similar genotypes, the sequences should be similar or more dissimilar... any tips for a beginner are welcomed. I am using Bioedit and CLC limited version.

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