Any of a number of the chromosomal mutation
s called translocation
s, where a segment of DNA
abnormally becomes attached to the wrong chromosome
, which results in two nonhomologous
chromosomes being able to cross over
, something which normally can occur only between homologous chromosomes.
From the BioTech Dictionary at http://biotech.icmb.utexas.edu/. For further information see the BioTech homenode.