genetics

FF commonly refers to the homozygous wild‑type or normal functional genotype at a given gene locus, while ff usually denotes a homozygous variant or loss‑of‑function genot...

In genetics, heterozygous describes an individual who has two different alleles at a specific gene locus—one inherited from each parent. For example, if a gene has a dominant...

Heterozygous and homozygous alleles describe two ways in which diploid organisms inherit matching or different versions of a gene from each parent. Being heterozygous means you...

Heterozygous describes a condition in which an individual carries two different alleles for a specific gene locus, one inherited from each parent. In a heterozygous genotype, th...

The Z chromosome in humans is not a typical sex chromosome as found in birds or some reptiles; in humans, the typical sex chromosomes are X and Y. This article explains what is...

The green fluorescent protein (GFP) gene sequence encodes a 238-amino acid β-barrel fluorescent protein originally isolated from the jellyfish Aequorea victoria . The canonical...

Berber genetics refers to the inherited biological information of Berber populations, including mitochondrial DNA, Y-chromosome lineages, and autosomal markers that trace deep a...

Your 23andMe Neanderthal score estimates how much Neanderthal DNA you carry compared to other ancestry reports. It reflects inherited variants common in people of non-African an...

An organism’s traits are shaped by variants called alleles at specific genomic positions. When the two alleles at a locus are identical, that individual is homozygous; when th...

A homozygous condition occurs when an organism carries two identical alleles at a specific gene locus, one inherited from each parent. This alignment means the genotype does not...