# genetics

/dʒəˈnɛtɪks/ (US) · /dʒɛnˈɛtɪks/ (UK)

Source: https://englishreference.com/word/genetics
Updated: 2026-06-20

## Senses

### 1. the field of study

noun · CEFR B2 · Academic

the branch of science that studies how traits like eye colour or height are passed from parents to children.

For teachers: the branch of biology concerned with the study of genes, genetic variation, and heredity in organisms.

- She decided to study genetics because she was interested in how DNA works.
- Advances in molecular genetics have allowed researchers to identify specific markers associated with various hereditary conditions.

Usage: Treated as a singular noun when referring to the scientific discipline.

### 2. biological makeup

noun · CEFR C1 · Technical

the specific set of genes that a person or animal has.

For teachers: the genetic properties or makeup of a specific individual, group, or species.

- Your genetics can play a big role in how your body reacts to certain foods.
- The unique genetics of this isolated population provide a rare opportunity to study the long-term effects of genetic drift.

Usage: Can be treated as plural when referring to the individual traits of a person.

## Examples

- She decided to study genetics to understand her family's history.
- Modern agriculture relies heavily on genetics to develop crops that can survive harsh weather and resist common pests.
- Advances in molecular genetics have allowed researchers to identify specific markers associated with hereditary diseases, paving the way for more personalized medical treatments.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.