{TAIL ~ The method} includes the steps of: a) exposing said nematode to an appropriate mutagen; b) propagating said nematode for at least one generation; c) amplifying the nucleic acids of said nematode using {HEAD ~ at least two nucleic acid primers} from the region of choice in the genome; and d) detecting the presence of a amplified nucleic acid which is shorter than the amplified nucleic acid from a non mutagenized nematode 
{ TAIL ~ The method } includes the steps of : a ) exposing said nematode to an appropriate mutagen ; b ) propagating said nematode for at least one generation ; c ) amplifying the nucleic acids of said nematode using { HEAD ~ at least two nucleic acid primers } from the region of choice in the genome ; and d ) detecting the presence of a amplified nucleic acid which is shorter than the amplified nucleic acid from a non mutagenized nematode
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