Julie,
The term heterozygous merely means that the two alleles of a given gene are not the
same.
It does not have anything to do with dominants or recessives (though the topic of
heterozygous and homozygous necessarily enters such discussions) merely the similarity
or differences of alleles at a single site.
E.g.: I have a geckophile gene. I happen to know that this gene codes for a protein
that makes me like eublepharine gex. Now it happens that I have two different, but
equally potent alleles at this locus and. Neither is dominant or recessive. I am
still, however, heterozygous at that location.
Keith "Heterozygosity leads to diversity . . . it's a good thing" Benson
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