Having two identical alleles for the same trait; found at the same loci on a pair of homologous chromosomes. (Example: two genes for tall [TT] or two genes for short [tt].)

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1. Having two identical alleles for the same trait; found at the same loci on a pair of homologous chromosomes. (Example: two genes for tall [TT] or two genes for short [tt].)
Image: Homozygous