which, when stained
, produces a banded pattern of alternating light and dark segments (also called a harlequin
pattern). It is made by treating a cell with 5'-bromodeoxyuridine
; the chemical
incorporates into the cell's DNA
and when stained is lighter than the DNA around it. (A chromosome is made up of DNA).
From the BioTech Dictionary at http://biotech.icmb.utexas.edu/. For further information see the BioTech homenode.