Heterozygous

Heterozygous refers to having two different versions (alleles) of a specific gene, one inherited from each parent. For example, if one parent contributes a gene for brown eyes and the other contributes a gene for blue eyes, the offspring would be heterozygous for eye color. This genetic variation can influence traits or characteristics, such as appearance or susceptibility to certain diseases. In contrast, if both genes are the same, the individual is termed homozygous. Heterozygosity can contribute to genetic diversity and may enhance an organism's ability to adapt to changing environments.