Heterozygous trait example. Understand how these genetics terms are used, their impact on tr...

Heterozygous trait example. Understand how these genetics terms are used, their impact on traits, and how they shape inheritance. Nov 13, 2025 · Heterozygous is a term used to describe when two variations of a gene are coupled on a chromosome. Although the shorter life expectancy for those with the homozygous condition would tend to disfavour the trait's survival, the trait is preserved in malaria-prone regions because of the benefits provided by the heterozygous form; an example of natural selection. The most familiar example is AB blood type, where a person inherits one A allele and one B allele, and both proteins appear on the surface of their red blood cells Key Examples Eye color : Heterozygous (Bb) often results in the dominant trait expressing, like brown over blue. Instead of one allele masking the other, both contribute visibly to the trait. Learn how they define our traits and disease risk. In a heterozygous individual, the way these two different alleles interact dictates which trait is expressed. Homozygous vs. Blood type : Type AB is heterozygous, blending A and B alleles via codominance. Disease carriers : Someone heterozygous for cystic fibrosis carries one mutated allele but usually shows no symptoms, passing the risk to offspring. bdn fjzq ufzvjj rpnvnn bqpll kbc iubnd crruq yngu ruug