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Glossary of Genetics Terms
beginning with letter D
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deletion
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noun
  1. An item that has been or will be deleted.
  2. The act of deleting.
deoxyribonucleic acid
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noun (abbreviation DNA)
  1. (context, genetics, biochemistry) A nucleic acid found in the nucleus of all cells; consists of a polymer formed from nucleotides and shaped into a double helix; it is associated with the transmission of genetic information.
descendant
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noun
  1. One who is the progeny of someone at any distance of time; e.g. a child; a grandchild, etc.
  2. (Biology) A later type; as, dogs evolved from relatives of early wolves.
determinant
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noun
  1. A determine, determining factor; an element that determines the nature of something
  2. (linearalg) The unique scalar function over square matrix, matrices which is distributive over matrix multiplication, multilinear in the rows and columns, and takes the value of 1 for the unit matrix. Abbreviation: det
  3. (biology) A substance that causes a cell to adopt a particular fate.
DNA
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initialism
  1. (genetics) deoxyribonucleic acid, Deoxyribonucleic acid, the genetic material of nearly all forms of life.
  2. (biochemistry) A biopolymer of Deoxyribonucleic acids (a type of nucleic acid) that has four different chemical groups, called bases: adenine, guanine, cytosine, and thymine.
  3. w:Defense Nuclear Agency, Defense Nuclear Agency.
  4. Did Not Answer.
  5. Did Not Arrive (used when someone fails to keep an appointment).
  6. Did Not Attend.
  7. Do Not Assume.
  8. Drugs 'n' alcohol.
dominant
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noun
  1. (music) The fifth major tone of a musical scale (five major steps above the note in question); thus G is the dominant of C, A of D, and so on.
  2. (music) The triad built on the dominant tone.
adjective
  1. Ruling; governing; prevailing; controlling; predominant; as, the dominant party, church, spirit, power.
downstream
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adjective
  1. Lower down, in relation to a river or stream
She lives downstream from the dam.
adverb
  1. Following the path of a river or stream
We spent the day paddling downstream in our canoes.
duplication
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noun
  1. The act of duplicating, or the state of being duplicated; a doubling; a folding over; a fold.
  2. The act or process of dividing by natural growth or spontaneous action; as, the duplication of cartilage cells.
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