DNA Terms

Anticodon: is a sequence of three bases found on a molecule called tRNA. It pairs with a matching sequence of three bases on mRNA during protein synthesis.


Bacteriophage: a type of virus that infects and replicates within bacteria, made up of genetic material, either DNA or RNA, enclosed in a protein coat. 


Codon: a sequence of three nucleotides in DNA or RNA that corresponds to a specific amino acid or a stop signal during protein synthesis. 


Deoxyribonucleic Acid (DNA) is a molecule that carries genetic instructions used in the growth, development, functioning, and reproduction of all known living organisms. - Double Helix Shape


DNA Polymerases: Enzymes that create DNA molecules by assembling nucleotides, the building blocks of DNA. 


DNA Replication: The process by which a DNA molecule makes a copy of itself. 


Double Helix: The shape of DNA molecules resembles a twisted ladder. The sides are made of sugar and phosphate, and the rings are made of nitrogenous bases. 


Exons: Sections of a gene that are expressed in the final mRNA product - they code for a protein 


Introns: non-coding sections of a gene that are removed during RNA splicing 


Messenger RNA (mRNA): a type of RNA that carries genetic information from DNA to the ribosomes, where proteins are synthesized. 


Mutagens: Agents, such as chemicals or radiation, that cause mutations in DNA. 


Mutations: a change in the DNA sequence that can lead to changes in a gene function or expression. 


Nitrogenous Base: a molecule found in DNA and RNA that encodes genetic information. The main bases include adenine, thymine, cytosine, and guanine. RNA - Uracil 


Nucleotides: the building blocks of DNA and RNA, consisting of a sugar, a phosphate group, and a nitrogenous base. 


Pyrimidines: a type of nitrogenous base that includes cytosine, and thymine in DNA 


Purines: a type of nitrogenous base which has adenine and guanine 


Ribonucleic Acid (RNA): a molecule similar to DNA that plays a role in coding, decoding, regulating, and expressing genes. 


Ribosomal RNA (rRNA): a type of RNA that, along with proteins, makes up the ribosomes whose proteins are synthesized


RNA Polymerase: an enzyme that helps make RNA from a DNA template during transcription. Binds to DNA, unwinds the DNA, and then reads the sequence to create a complementary RNA strand. 


RNA Splicing: the process of removing introns from pre-mRNA transcript and connecting exons to form a mature mRNA molecule


Transcription: the process of copying a segment of DNA into RNA, particularly mRNA, by the enzyme RNA polymerase 


Transfer RNA (tRNA): a type of RNA that helps decode a messenger RNA (mRNA) sequence into a protein during translation; it carries amino acids to the ribosomes. 


Translation: the process by which the sequence of a messenger RNA (mRNA) is decoded to produce a specific protein, with the help of ribosomes and tRNA 


Virus: a tiny infectious agent that can only reproduce inside the cells of living organisms. It consists of genetic material surrounded by a protein coat.  


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