A pair of chromosomes from the proband’s uncle is shown at left; the uncle is heterozygous for the variant chromosome, which is the leftmost member of the pair.

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

A sex-chromosome inversion causes strong overdominance for sperm traits that affect siring success. Nature Ecology & Evolution , 2017; DOI: 10.1038/s41559-017-0236-1 Cite This Page : ...

Learn about the causes, symptoms, and treatment of heterozygous familial hypercholesterolemia, a disease that causes you to have very high cholesterol levels.

Chromosomes: genetic storehouses. Humans have 23 pairs of chromosomes, ... make them a homozygous sex as compared with the XY condition in males, known as heterozygous.

A novel genome editing technique, NICER, is based on the creation of multiple nicks in single DNA strands by nickase. The method can correct heterozygous mutations using two mechanisms: multiple ...

Scientists fully sequence the Y chromosome for the first time, uncovering information that could have implications for the study of male infertility and other issues.

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

We also look at how a heterozygous mutation differs from a homozygous mutation. A note about sex and gender. ... In females, each parent has an X chromosome with the same atypical gene.

Researchers at Children's Hospital of Philadelphia (CHOP) have found that in rare instances, variants responsible for SYNGAP1-related disorders—a group of disorders characterized by developmental ...

The term “heterozygous” also refers to a pair of alleles. Unlike homozygous, being heterozygous means you have two different alleles. ... Genes and genetics explained. (2019) ...