Haplotype
Definition
A specific set of genetic variants inherited together, typically used here for mitochondrial DNA variants. Different geographic populations of the same species carry different haplotype frequencies.
- Definition
- Set of genetic variants inherited together
- Context here
- Mitochondrial DNA variant sets
- Variation source
- Differs by geographic population
- Forensic use
- Estimating geographic origin from insect specimens
Common questions
Why would insect population genetics use mtDNA haplotypes rather than nuclear markers?+
Mitochondrial DNA is maternally inherited without recombination and present in high copy number, making it easier to recover from small or degraded insect specimens and giving a clean lineage signal for comparing populations.
How does haplotype frequency help estimate where an insect specimen originated?+
Different geographic populations of the same species accumulate distinct haplotype frequency patterns over time, so matching an unknown specimen's haplotype against a reference database can point to the likely source region.
Is a haplotype match alone enough to pinpoint an exact location?+
Generally not, since closely related populations can share common haplotypes, so a match narrows the likely region rather than confirming a single precise origin without additional supporting data.
Related terms
- Body Movement Inference
- The forensic application: using the population-genetic signature of insects collected from a body to estimate where colonisation occurred, and therefore potentially where...
- Gene Flow
- The movement of alleles between populations through migration and reproduction. High gene flow homogenises populations; low gene flow allows them to differentiate...
- Genetic Structure
- The degree to which populations within a species are genetically differentiated from each other. Measured by statistics like Fst (fixation index). High...
- Phylogeography
- The study of the geographic distribution of genetic lineages within and among closely related species. Provides the reference maps that forensic population...
- Reference Population Panel
- A georeferenced dataset of sequences from known collection localities, used as the comparison baseline when the provenance of a forensic specimen is...