holandric gene
Definition
Noun: A holandric gene is a gene that is located on the Y chromosome. This means it is passed directly from a father to all of his sons and is never inherited by daughters, as only males possess a Y chromosome.
Usage
The term is used specifically in genetics and biology to describe the inheritance pattern and chromosomal location of certain traits. * The holandric gene responsible for hypertrichosis pinnae auris (excessive hair growth on the outer ear) is a classic example of Y-linked inheritance. * Researchers are investigating whether this trait is controlled by a single holandric gene or a more complex mechanism.
Advanced Usage
- Holandric inheritance: This is the pattern of inheritance for holandric genes. It is characterized by the transmission of a trait from a father to 100% of his sons and 0% of his daughters.
- The pedigree showed a clear pattern of holandric inheritance, with the condition appearing in every male descendant.
Variants and Related Words
- Y-linked gene: This is a direct synonym for holandric gene.
- Hologynic gene: A contrasting term for a gene located on the X chromosome that is passed from a mother to all of her children, but whose phenotypic expression may be different in males and females.
Synonyms
- Y-linked gene
- Y-chromosomal gene
Antonyms / Contrasting Terms
- X-linked gene: A gene located on the X chromosome.
- Autosomal gene: A gene located on any chromosome that is not a sex chromosome (not on X or Y).
Noun
-
a gene located on a Y chromosome
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