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What Is Sequence Homology and How Do You Infer It from BLAST Results?: Sequence homology is a conclusion about shared ancestry, not a measurement. Two sequences are homologous if they descend from a c…
What Is Sequence Alignment and How Does BLAST Perform It?: Sequence alignment is the process of arranging two or more biological sequences—DNA, RNA, or protein—so that positions with share…
What Is Sequence Similarity and How Does BLAST Measure It?: Sequence similarity is the degree to which two biological sequences — DNA, RNA, or protein — match in local regions when aligned …
What Is BLAST and Which BLAST Search Should You Use?: BLAST (Basic Local Alignment Search Tool) finds regions of local similarity between biological sequences. It compares a nucleotid…
What Is Bioinformatics and What Do People Actually Do in It?: Bioinformatics is the practice of applying computation, statistics, and software to biological data — DNA, RNA, and protein seque…