Definition
adjective
(1) Characterized by having one or more genes without allelic counterparts.
(2) Pertaining to a diploid cell with only one copy of a gene instead of the usual two copies.
Supplement
For example, the male is hemizygous for most X chromosome genes.
Word origin: Greek hēmi- half.
Related forms: hemizygosity (noun), hemizygote (noun).
Compare: homozygous, heterozygous
Dictionary > Hemizygous
You will also like...
![Flowers and tiny fruits of the pomegranate plant](https://www.biologyonline.com/wp-content/uploads/2020/02/Fruits-Flowers-and-Seeds-252x168.jpg)
Fruits, Flowers, and Seeds
This tutorial deals with the structure and function of flowers, fruits, and seeds. Also included here are the types of f..
![Physiological Homeostasis](https://www.biologyonline.com/wp-content/uploads/2020/02/Physiological-Homeostasis-168x168.jpg)
Physiological Homeostasis
Homeostasis is essential to maintain conditions within the tolerable limits. Otherwise, the body will fail to function p..
![squirrel](https://www.biologyonline.com/wp-content/uploads/2020/02/Animal-Water-Regulation-300x168.jpg)
Animal Water Regulation
Animals adapt to their environment in aspects of anatomy, physiology, and behavior. This tutorial will help you understa..
![Human Neurology](https://www.biologyonline.com/wp-content/uploads/2020/02/Human-Neurology-300x168.jpg)
Human Neurology
Human Neurology deals essentially with the nervous system of humans. It also features the various theories put forward b..
![running freshwater community](https://www.biologyonline.com/wp-content/uploads/2020/02/Running-Water-Freshwater-Community-Factors-252x168.jpg)
Running Water Freshwater Community Factors
This tutorial noted some of the physical and chemical factors that provide the framework of a running water community in..
![Buttress roots](https://www.biologyonline.com/wp-content/uploads/2020/02/Roots-252x168.jpg)
Roots
This study guide tackles plant roots in greater detail. It delves into the development of plant roots, the root structur..