BLAST: Basic Local Alignment Search Tool
The Basic Local Alignment Search Tool (BLAST) finds regions of local similarity between sequences. The program compares nucleotide or protein sequences to sequence databases and calculates the statistical significance of matches. BLAST can be used to infer functional and evolutionary relationships between sequences as well as help identify members of gene families.
概览
收录于
2026年3月17日
学科与领域
life-health · evolution-natural-selection
年级范围
九年级（高一）–十二年级（高四）
页面类型
Tool
关键词
blastbasic local alignment search toolsequence similaritysequence alignmentsequence homologybioinformatics
简介
Overview of BLAST
- Purpose: BLAST (Basic Local Alignment Search Tool) identifies regions of local similarity between biological sequences.
- Functionality: It compares nucleotide or protein sequences against sequence databases and calculates the statistical significance of the matches.
- Applications: Used to infer functional and evolutionary relationships between sequences and to identify members of gene families.
- Platform: An official, secure United States government website.
- Recent Updates: The latest BLAST+ release was highlighted on July 21, 2025.
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