Polymorphismus nucleotidi singularis
Polymorphismus nucleotidi singularis (PNS, abbreviatura internationalis: SNP) est intra genomum (i.e. ADN), positione certa varietas nucleotidi singularis. In hominibus frequentissimus polymorphismi C/T sunt, quo facta est varietas de basi cytosino (C) in thymimum (T).

In diversis morbis polymorphismi nucleotidi singularis momentum maximum habere putatur, ut in morbo Alzheimeriano (morbo neurodegenerativo) vel in endometriose (morbo gynaecologico).

Notae 

 Encephalomyelitis disseminata
 Endometriosis
 Morbus Alzheimerianus
 Morbus Parkinson#Genetica

Genetica