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Antiparallel strands of DNA

A term used to describe the opposite orientations of the two strands of a DNA double helix; the 5' end of one strand aligns with the 3' end of the other strand.


a virus that is parasitic in bacteria

Base pairing

principle that bonds in DNA can form only between adenine and thymine and between guanine and cytosine

Chargaff's Rule

[A]=[T] and [G]=[C], they pair up across from one another forming two strands also called base pairing.


either one of two chromatic colors that when mixed together give white (in the case of lights) or gray (in the case of pigments)

Deoxyribonucleic acid

(biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix

DNA Polymerase

enzyme involved in DNA replication that joins individual nucleotides to produce a DNA molecule

DNA Replication

the process of making a copy of DNA


(genetics) a segment of DNA that is involved in producing a polypeptide chain


the ordering of genes in a haploid set of chromosomes of a particular organism


type genus of the family Helicidae

Nitrogenous Base

an organic base that contains nitrogen, such as a purine or pyrimidine; a subunit of a nucleotide in DNA and RNA


a phosphoric ester of a nucleoside


either (free) end of a eukaryotic chromosome


(genetics) modification of a cell or bacterium by the uptake and incorporation of exogenous DNA


immunogen consisting of a suspension of weakened or dead pathogenic cells injected in order to stimulate the production of antibodies


extremely poisonous or injurious

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