Top Definition
Having a difference in the loci, (location of the genes on a chromosome,) of one or more chromosomes. Can also be used to refer to a heterozygote. Note how hetero=different and zygous means referring to a zygote or it's characteristics.
Wow, these heterozygotes have lots of different loci.
by Sean, ( you don't know me!) July 23, 2005
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