hemizygous

adjective

hemi·​zy·​gous ˌhe-mi-ˈzī-gəs 

: having or characterized by one or more genes (as in a genetic deficiency or in an X chromosome paired with a Y chromosome) that have no allelic counterparts

Word History

First Known Use

circa 1921, in the meaning defined above

Medical Definition

hemizygous

adjective

hemi·​zy·​gous -ˈzī-gəs 

: having or characterized by one or more genes (as in a genetic deficiency or in an X chromosome paired with a Y chromosome) that have no allelic counterparts

hemizygosity

-zī-ˈgäs-ə-tē 

noun

plural hemizygosities