1. 
   Hemizygous
   Hemizygous: Having only a single copy of a gene instead of the customary two copies. All of the gene on the single X chromosome in the male are in the hemizygous state.
   Found op http://www.medterms.com/script/main/art.html?articlekey=3687
   
   
2. 
   hemizygous
   <genetics> A situation within a cell where only one copy of a gene or group of genes is present instead of the usual two copies per gene in a diploid genome. The word is used as in the following example: the cell is hemizygous for gene X. ... (09 Oct 1997) ...
   Found op http://www.mondofacto.com/facts/dictionary?hemizygous
   
   
3. 
   Hemizygous
   Having only one copy of a particular gene. For example, in humans, males are hemizygous for genes found on the Y chromosome.
   Found op http://www.ornl.gov/sci/techresources/Human_Genome/glossary/glossary.shtml
   
   
4. 
   hemizygous
   Type: Term Pronunciation: hem′ē-zī′gŭs Definitions: 1. Pertaining to a gene of which only one copy is present in an organism having diploid cells. In human beings, refers to genes on the X chromosome in males, which are expressed whether dominant or recessive. Synonyms: he...
   Found op http://www.medilexicon.com/medicaldictionary.php?t=40026
   
   
5. 
   hemizygous
   Having one or more genes that have no allele counterparts. Usually applied to genes on the male's X chromosome (in humans).
   Found op http://www.emc.maricopa.edu/faculty/farabee/biobk/biobookglossh.html
   
   

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