Understanding Biology Hardy–Weinberg Recessive Homozygote
How we calculate. Expected aa (recessive homozygote) frequency = q². The form uses the same arithmetic as the worked examples on this page. See our methodology and accuracy policy.
Real-world scenario: Work a realistic Biology Hardy–Weinberg Recessive Homozygote example with the labeled inputs on this page, then compare your result to the worked example.
What is Biology Hardy–Weinberg Recessive Homozygote?
Complements Wave 1 2pq and Wave 2 p². Distinct from carrier frequency 2pq.
- q between 0 and 1
- HW teaching model
- Phenotype share only if complete penetrance
The Formula
Worked Example
Common Use Cases
- Homework: recessive phenotypes
- Study: pair with p² and 2pq
- Lab: expected aa share
Pro Tips
- Pair with Wave 1 2pq
- q is not q²
- Freeze locus definition
Limitations: Biology Hardy–Weinberg Recessive Homozygote 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 q² the carrier frequency?
No. Carriers are typically heterozygotes (2pq). q² is recessive homozygotes.
Can I enter q as a percent?
Enter a fraction 0–1 (e.g. 0.3), not 30.
Authoritative References
For biology study concepts, consult:
- OpenStax Biology — free textbook reference
- Khan Academy Biology — introductory explainers
- Nature Scitable — genetics and cell biology context