Dictionary > Hemizygosity

Hemizygosity

Definition
noun
A genetic condition where there is only one copy of a gene in an otherwise diploid cell or organism.
Supplement
For example, a copy of a gene that is deleted will result in hemizygosity in a diploid cell or organism. Hemizygosity is also displayed in human males where there is only one X chromosome (as the other sex chromosome is a Y chromosome). In another example, male honeybees are hemizygous as they develop from unfertilized eggs (unlike female honeybees that develop from fertilized eggs and thus have two sets of genes).
Word origin: Greek hēmi- half + zygosity.

Related forms: hemizygous (adjective)
Compare: homozygosity, heterozygosity

See also: zygosity


You will also like...

Electromagnetic spectrum of a brain
Sleep and Dreams – Neurology

While learning and intelligence are associated with the functions of a conscious mind, sleep and dreams are activities o..

The Human Physiology
The Human Physiology

Physiology is the study of how living organisms function. Thus, human physiology deals specifically with the physiologic..

Origins of Life on Earth
Origins of Life on Earth

Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..

Transpiration
Water in Plants

The movement of molecules (specifically, water and solutes) is vital to the understanding of plant processes. This tuto..

Balanced Diet
A Balanced Diet – Minerals and Proteins

Proteins and minerals can be derived from various dietary sources. They are essential for the proper growth and developm..

Crossing Over and Genetic Diversity
Inheritance and Probability

Gregor Mendel, an Austrian monk, is most famous in this field for his study of the phenotype of pea plants, including ..

Related Articles...

No related articles found

See all Related Topics