Assertion: mutation | /r/HasProperty | homozygous
Facets:
Source sentences:
text: When the mutation is homozygous, the pteridine pigments are unable to be synthesized because in the beginning of the pteridine pathway, a defective enzyme is being coded by homozygous recessive genes.  
text: Both wild type and mutant can be homozygous or heterozygous.
text: When the mutation is homozygous, the pteridine pigments are unable to be synthesized because in the beginning of the pteridine pathway, a defective enzyme is being coded by homozygous recessive genes.