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hemizygote

[hem-i-zahy-goht, -zig-oht]
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noun Genetics.
  1. an individual having only one of a given pair of genes.

Origin of hemizygote

First recorded in 1930–35; hemi- + zygote
Related formshem·i·zy·gous [hem-i-zahy-guh s] /ˌhɛm ɪˈzaɪ gəs/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for hemizygous

hemizygous

adjective
  1. genetics (of a chromosome or gene) not having a homologue; not paired in a diploid cell
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

hemizygous in Medicine

hemizygous

(hĕm′ĭ-zīgəs)
adj.
  1. Having unpaired genes in an otherwise diploid cell.

hemizygote

(hĕm′ĭ-zīgōt′)
n.
  1. An individual that is hemizygous with respect to one or more specified genes.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.