hardy-weinberg law
LowAcademic/Technical
Definition
Meaning
A principle in population genetics stating that allele and genotype frequencies in a population remain constant from generation to generation in the absence of evolutionary influences.
A mathematical model describing genetic equilibrium in an ideal, non-evolving population, used as a null hypothesis to detect evolutionary forces like selection, mutation, migration, or genetic drift.
Linguistics
Semantic Notes
Always capitalized; often referred to as the Hardy-Weinberg principle, equilibrium, or model. It is a foundational concept in evolutionary biology and genetics.
Dialectal Variation
British vs American Usage
Differences
No significant differences in usage. Both regions use the term identically in scientific contexts.
Connotations
Purely technical and academic; no regional connotations.
Frequency
Equally low frequency in both UK and US English, confined to biology and genetics education and research.
Vocabulary
Collocations
Grammar
Valency Patterns
The Hardy-Weinberg law states that...According to the Hardy-Weinberg law,...Deviations from the Hardy-Weinberg law indicate...Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “As predictable as Hardy-Weinberg”
Usage
Context Usage
Business
Not used.
Academic
Core concept in biology and genetics courses; used in research papers on population genetics.
Everyday
Virtually never used.
Technical
Used in genetics labs, bioinformatics, and evolutionary biology discussions.
Examples
By Part of Speech
adjective
British English
- The Hardy-Weinberg calculations are fundamental.
- A Hardy-Weinberg population is hypothetical.
American English
- The Hardy-Weinberg analysis is required.
- A Hardy-Weinberg assumption is no mutation.
Examples
By CEFR Level
- The Hardy-Weinberg law is a biology topic.
- Scientists use the Hardy-Weinberg law to study genes.
- If a population is in Hardy-Weinberg equilibrium, its allele frequencies remain stable.
- Deviation from the Hardy-Weinberg law can indicate the presence of natural selection or genetic drift in a population.
Learning
Memory Aids
Mnemonic
Hardy and Weinberg found a law to keep genes in equilibrium, like a scale that never tips without evolutionary pressure.
Conceptual Metaphor
A genetic 'balance sheet' where the books must stay balanced unless external forces intervene.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid translating 'law' as 'закон' in a legal sense; it is a scientific principle (принцип).
- Do not confuse 'Hardy' with the adjective meaning 'robust' (выносливый).
Common Mistakes
- Misspelling as 'Hardy-Weinburg' or 'Hardy-Weinbergs law'.
- Using it as a verb (e.g., 'to hardy-weinberg').
Practice
Quiz
What does the Hardy-Weinberg law describe?
FAQ
Frequently Asked Questions
It was independently formulated by the British mathematician Godfrey Harold Hardy and the German physician Wilhelm Weinberg in 1908.
The assumptions include: no mutation, random mating, no natural selection, infinitely large population size, and no gene flow (migration).
It serves as a null model or baseline to detect and measure evolutionary forces acting on a population.
Real populations rarely meet all assumptions perfectly, so deviations are common and help identify evolutionary processes.