Trait controlled by the both environment and genetic factor. Usually, multifactorial traits outside of illness result in what we see as continuous characteristics in organisms, especially human organisms such as: height, skin color, and body mass.
I recently took a drug test for a job. I tested positive for opiates in my urine. I do not and have never taken drugs of any sort other than alcohol. I dont take any prescription drugs, how is it possible that this happened. I hade consumed some beer about12 hours before the test.
Detection of Opiates in Urine: Detection of Opiates in Urine. Share. Toxicology Laboratories Â©. Opiates are a very old class of drugs derived from the exudate of the opium poppy and used for centuries for pain relief. Morphine is the principal alkaloid in opium and the name morphine was derived from the Greek god of dreams - Morpheus.