Understanding Biology Hardy–Weinberg Heterozygote Frequency
How we calculate. Heterozygote frequency = 2 × p × q. 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 Hardy–Weinberg Heterozygote Frequency case uses p (allele frequency) 0.7 and q (allele frequency) 0.3. Enter the same figures below to reproduce the worked path.
What is Biology Hardy–Weinberg Heterozygote Frequency?
Expected Aa frequency under HWE. Distinct from allele frequency alone and from phenotype recessive q².
- p = frequency of A
- q = frequency of a
- HWE assumptions required
The Formula
Worked Example
Common Use Cases
- Homework: carrier estimates
- Study: HWE drills
- Lab: genotype expectations
Pro Tips
- Check p + q ≈ 1
- Pair with allele frequency
- State HWE assumptions
Limitations: Biology Hardy–Weinberg Heterozygote 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
Must p + q equal 1?
For a two-allele locus under HWE teaching models, yes. This page still computes 2pq from your inputs.
Is 2pq a percent?
It is a frequency (0–1). Multiply by 100 if your worksheet asks for percent.
Authoritative References
For biology study concepts, consult:
- OpenStax Biology — free textbook reference
- Khan Academy Biology — introductory explainers
- Nature Scitable — genetics and cell biology context