# Variant zygosity notations

{% hint style="info" %}
Hom = Homozygous for alternative allele;

Het = Heterozygous;

Hemi = Hemizygous (X-chromosome variants in males except for heterozygous variants in pseudoautosomal regions);

Ref = Homozygous for reference allele;

No Cov = Genotype unknown.
{% endhint %}