Definition

1. Adjective:
   • Relating to an autosome: Describes something that pertains to or is associated with an autosome, which is any chromosome that is not a sex chromosome (not an X or Y chromosome). In humans, autosomes are the 22 numbered chromosome pairs.

Usage

• The term "autosomal" is primarily used in the fields of genetics, biology, and medicine to describe genes, traits, disorders, or inheritance patterns that involve the autosomes.
• It is typically used attributively (before a noun) to modify terms like "gene," "disorder," "trait," or "inheritance."

Examples

• Adjective:
  • Cystic fibrosis is caused by an autosomal recessive gene.
  • The study focused on autosomal DNA to trace ancestral lineages.
  • Most genetic traits are autosomal, meaning they are carried on the non-sex chromosomes.

Advanced Usage

• "Autosomal dominant": A pattern of inheritance where only one copy of a mutated gene on an autosome is necessary for an individual to be affected by a disorder or trait.
  • Huntington's disease is an autosomal dominant disorder.
• "Autosomal recessive": A pattern of inheritance where two copies of a mutated gene (one from each parent) on an autosome are required for an individual to be affected.
  • Sickle cell anemia is an autosomal recessive condition.

Variants and Related Words

• Autosome (noun): Any chromosome that is not a sex chromosome. Humans have 22 pairs of autosomes.
  • The karyotype showed a normal set of autosomes.
• Autosomally (adverb): In a manner relating to autosomes. (Less common)
  • The trait is inherited autosomally.

Synonyms

• Non-sex chromosomal: Pertaining to chromosomes other than the X and Y chromosomes. (This is a descriptive phrase rather than a single-word synonym.)

Notes

• The term is specific to genetics. There are no common idioms or phrasal verbs associated with "autosomal."
• It is important to distinguish "autosomal" from "sex-linked" (pertaining to the X or Y chromosome).

Adjective

1. of or relating to an autosome
   • autosomal gene