When you’re heterozygous for a specific gene, it means you have two different versions of that gene. Here's what that means.

Heterozygous is a term used in genetics to describe when two variations of a gene, known as alleles, are paired at the same location (locus) on a chromosome.By contrast, homozygous is when there ...

Thus, according to Mendel's principles, a dihybrid cross between two heterozygous fruit flies with brown bodies and red eyes (BbEe X BbEe) should yield offspring with nine possible genotypes (BBEE ...

Heterozygous hemochromatosis is when a person carries only one gene for hemochromatosis rather than two. They may not have symptoms.

The brown eye color allele is dominant over the blue eye allele. You can have brown eyes whether you’re homozygous (two alleles for brown eyes) or heterozygous (one for brown and one for blue).