مقایسهٔ روش‌ها

	فراخوانی واریانت	هم‌ترازسازی توالی
حوزه	زیست‌اطلاعاتی	زیست‌اطلاعاتی
خانواده	Process / pipeline	Process / pipeline
سال پیدایش	2009–2010 (modern high-throughput era)	1970 (global alignment); 1981 (local alignment)
پدیدآور	Li et al. (SAMtools/bcftools, 2009); McKenna et al. (GATK, 2010)	Saul B. Needleman & Christian D. Wunsch (global); Temple F. Smith & Michael S. Waterman (local)
نوع	Computational genomics pipeline	Computational sequence analysis technique
منبع بنیادین	McKenna, A., Hanna, M., Banks, E., Sivachenko, A., Cibulskis, K., Kernytsky, A., ... & DePristo, M. A. (2010). The Genome Analysis Toolkit: A MapReduce framework for analyzing next-generation DNA sequencing data. Genome Research, 20(9), 1297–1303.	Needleman, S. B., & Wunsch, C. D. (1970). A general method applicable to the search for similarities in the amino acid sequence of two proteins. Journal of Molecular Biology, 48(3), 443–453.
نام‌های دیگر	SNP calling, genotyping from sequencing, mutation detection, variant detection	pairwise alignment, multiple sequence alignment, MSA, sequence comparison
مرتبط	6	6
خلاصه	Variant calling is the computational process of identifying positions in a sequenced genome that differ from a reference sequence — including single nucleotide polymorphisms (SNPs), small insertions and deletions (indels), and structural variants. It transforms aligned sequencing reads into an interpretable catalogue of genetic differences, forming the foundation for population genetics, disease-gene discovery, and clinical genomics applications.	Sequence alignment is a foundational bioinformatics technique that arranges two or more DNA, RNA, or protein sequences to reveal regions of similarity, infer evolutionary relationships, identify functional domains, and map sequencing reads to reference genomes. It underpins virtually every downstream genomic analysis, from variant calling and gene expression quantification to phylogenetics and structural annotation.