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.
Which of the following is an example of a polygenic trait? A The flower color of a plant is determined by how three different alleles are paired in the plant.B A dominant form of a gene determines short ear length in an animal while a recessive form determines long ear length.C Spotted wings on a species of owl form as the result of two alleles that are both expressed equally. A dominant form of a gene determines short ear length in an animal while a recessive form determines long ear length. C Spotted wings on a species of owl form as the result of two alleles that are both expressed equally.