a

b

c

d

e

f

g

h

i

j

k

l

m

n

o

p

q

r

s

t

u

v

w

x

y

z

DNA

Definition

Deoxyribonucleic acid; the primary genetic material of a cell; a polymer of the deoxyribonucleotides. Typically the polynucleotide chains occur in the form of a double helix. The sequence of nucleotide pairings in the chains is the basis of the genetic code. DNA molecules are the largest biologically active molecules known.

English French Spanish Greek Norwegian Polish Hungarian Turkish Galician