Word Origin and History for mesopotamian. ancient name for the land that lies between the Tigris and Euphrates rivers (in modern Iraq), from Greek mesopotamia (khora), literally a country between two rivers, from fem. of mesopotamos, from mesos middle (see medial (adj.)) + potamos river (see potamo-).
Monogenic forms, caused by a single mutation in a dominantly or recessively inherited gene, are well-established, albeit relatively rare types of PD. They collectively account for about 30% of the familial and 3%â5% of the sporadic cases.
Monogenic autosomal dominant disorders occur through the inheritance of a single copy of a defective gene. These disorders are the result of a single defective gene on the autosomes. They are inherited according to Mendel's Laws (Mendelian disorders).The mutation can be spontaneous and where there is no previous family history. Inheritance patterns can be autosomal dominant, autosomal recessive or X-linked recessive.hese disorders are the result of a single defective gene on the autosomes. They are inherited according to Mendel's Laws (Mendelian disorders). The mutation can be spontaneous and where there is no previous family history. Inheritance patterns can be autosomal dominant, autosomal recessive or X-linked recessive.