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Genotyping Array

Definition
AI-generated

A genotyping array (SNP array) assays hundreds of thousands to millions of preset SNPs and indels by hybridization or chip-based chemistry, yielding per-sample genotypes at fixed panel loci rather than full sequence.

Why it matters in GWAS

Most GWAS use arrays for cost-efficient genome-wide coverage; content differs by vendor, so meta-analysis requires strand harmonization and overlap-aware imputation to a shared reference.

Example usage

"Quality-controlled Genotyping Array data were integrated with GWAS signals for downstream interpretation."

References

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