E-Value (BLAST)
Definition
The expected number of alignments as good as the query result that would occur by chance in a database of the given size. An E-value of 1e-100 means one such hit is expected in 10^100 random searches. For forensic species identification, E-values below 1e-50 with identity above 98% are typically considered sufficient for a confident species call.
Related terms
- EMPOP SAM2
- The submission quality-assurance module used by the EMPOP database to screen incoming mtDNA sequences for phylogenetic inconsistencies, sequencing artefacts, and nomenclature errors....
- Haplogroup
- A monophyletic branch of the human mitochondrial (or Y-chromosome) phylogenetic tree defined by a set of derived mutations. Haplogroup assignment is the...
- INSDC
- International Nucleotide Sequence Database Collaboration, the three-way partnership between GenBank (NCBI/NLM, US), ENA (EMBL-EBI, UK/EU), and DDBJ (National Institute of Genetics, Japan)...
- rCRS
- The revised Cambridge Reference Sequence (GenBank accession NC_012920), the standard reference for human mitochondrial DNA. All mtDNA variant positions in forensic and...
Explained in
- Sequence Alignment, BLAST, GenBank, Mitomap and EMPOPThe expected number of alignments as good as the query result that would occur by chance in a database of the given size. An E-value of 1e-100 means one such h...