Expression of a gene

From Opasnet
Revision as of 16:39, 24 August 2009 by Henrik (talk | contribs)
Jump to navigation Jump to search

expression of a gene, reading a genetic information from DNA to make a new protein (see DNA and RNA). Every cell contains every gene of the individual, but only some are expressed in any particular cell, and often only at a particular time. Proteins involved e.g. in the synthesis of skin pigment are expressed only in certain layers of the skin, and not in the gut; even in the skin the rate of expression depends on the stimulation by sunlight.