DNA

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Definition
  1. Noun:
    • Deoxyribonucleic acid: A long, complex molecule that contains the genetic instructions used in the development, functioning, and reproduction of all known living organisms and many viruses. It is composed of nucleotides arranged in a double helix structure.
Usage
  • Noun:
    • DNA is found in the nucleus of a cell.
    • Scientists analyzed the DNA from the sample.
    • The DNA evidence was crucial for the investigation.
Advanced Usage
  • "Junk DNA": Refers to sections of DNA that do not code for proteins, whose function may not yet be fully understood.
    • Researchers are studying the potential roles of so-called junk DNA.
  • "Mitochondrial DNA": DNA located in mitochondria, the cell's energy producers, which is inherited only from the mother.
    • Mitochondrial DNA is often used in genealogical and evolutionary studies.
Variants and Related Words
  • cDNA (complementary DNA): DNA synthesized from a messenger RNA template.
    • The lab produced cDNA for the gene expression study.
  • rDNA (ribosomal DNA): The DNA sequences that code for ribosomal RNA.
    • rDNA is highly conserved across species.
  • DNA fingerprinting: A technique for identifying individuals based on unique patterns in their DNA.
    • DNA fingerprinting is a standard tool in forensic science.
Synonyms
  • Genetic material
  • Genome (refers to the complete set of DNA in an organism)
  • Double helix (refers to the structure of DNA)
Related Phrases
  • DNA sequence: The specific order of nucleotide bases (A, T, C, G) in a strand of DNA.
    • The project aimed to map the entire DNA sequence of the organism.
  • DNA replication: The process by which a DNA molecule makes a copy of itself.
    • DNA replication is essential for cell division.
  • DNA damage: Harmful changes to the chemical structure of DNA.
    • Exposure to UV radiation can cause DNA damage.
Related Idioms
  • "It's in my/your DNA": Used figuratively to mean a fundamental, inherent, or unchangeable part of a person's character or nature.
    • She's so creative; it's in her DNA.
    • Honesty is in his DNA.
Noun
  1. (biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix; associated with the transmission of genetic information
    • DNA is the king of molecules

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