Dictionary
Find
in
Dictionary
Thesaurus
Translations

Click to move up the list of words
double first
double flat
double-glaze
double glazing
Double Gloucester
double grab
double-handed grab
double-header
double helix
double-hulled
double-hung
double indemnity
double jeopardy
double-jointed
double knit
double knitting
double life
Click to move down the list of words
Print Preview
See pronunciation key
Search for "double helix" in all of MSN Encarta
E-mail this entry
Blog about this entry on MSN Spaces
Download the MSN Encarta Right-Click Dictionary

double helix

dou·ble he·lix (plural dou·ble hel·i·ces or dou·ble he·lix·es)


noun 
Definition:
 
double spiral structure of DNA: the molecular structure of DNA, consisting of a pair of polynucleotide strands connected by a series of hydrogen bonds and wound in opposing spirals

Advertisement

Also on Encarta
Englishtown: Learn English online
Our Partners
Also on MSN
Encarta Message Boards (© Rubberball/Jupiterimages)
Shopping
© 2009 Microsoft