Understanding Biology Allele Frequency
How we calculate. Allele frequency = copies of the allele ÷ total alleles at the locus. The form uses the same arithmetic as the worked examples on this page. See our methodology and accuracy policy.
Real-world scenario: A typical Biology Allele Frequency case uses allele copies 120 and total alleles 400. Enter the same figures below to reproduce the worked path.
What is Biology Allele Frequency?
A population-genetics frequency (0–1). Distinct from phenotype percent and from Hardy–Weinberg 2pq.
- 0 ≤ frequency ≤ 1
- Diploid locus: total alleles ≈ 2N
- Same generation
The Formula
Worked Example
Common Use Cases
- Homework: population genetics
- Study: Hardy–Weinberg inputs
- Lab: gel-band counts
Pro Tips
- Count alleles, not just individuals
- Pair with HW heterozygote
- Label which allele
Limitations: Biology Allele Frequency results are educational biology study aids—not medical diagnosis, clinical advice, or ecological management guidance. Confirm formulas and units with your textbook or instructor.
FAQ
Is this the same as phenotype frequency?
No. Phenotype frequency counts individuals. Allele frequency counts gene copies.
What if total alleles is 0?
Frequency is undefined—enter a positive total.
Authoritative References
For biology study concepts, consult:
- OpenStax Biology — free textbook reference
- Khan Academy Biology — introductory explainers
- Nature Scitable — genetics and cell biology context