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DNA

UK //ˌdiː.enˈeɪ// US //ˌdiː.enˈeɪ// Pronunciation

Definition

A molecule that carries genetic instructions used in the growth and functioning of living organisms.

Listen to definition

In simple words: The building blocks of all living things that contain genetic information.

Examples

• Scientists extracted the DNA from the sample to analyze its genetic makeup.
• DNA testing can help identify familial relationships in forensic cases.
• Researchers are studying how DNA mutations can lead to diseases.
• In humans, DNA is organized into structures called chromosomes.
• The discovery of the DNA double helix was a landmark moment in science.

Usage notes

Used in scientific contexts, especially biology and medicine. Not used informally.

Grammar pattern

standalone noun

Memory hint

DNA sounds like 'Deoxyribonucleic Acid' - imagine a double helix ladder structure.

Collocations

• extract DNA
• analyze DNA
• DNA sequence
• DNA testing
• DNA structure

Synonyms

• genetic material
• chromosome
• hereditary information

Common mistakes

• Confused with RNA - learners may mix these two terms.
• Omitting 'the' when referring to DNA in a specific context.
• Misunderstanding its role in genetics and heredity.