noun, plural: hemizygotes
A diploid cell or organism in which there is only one allele present for a particular gene.
A hemizygote results when one copy of a gene is deleted.
Example of hemizygote organisms are the male honeybees that develop from unfertilized eggs. Hence, they are haploid organisms unlike their female counterparts that are diploid.
Word origin: hemi- (half) + zygote.
Related forms: hemizygous (adjective).
See also: zygosity