Like Y-DNA STRs, autosomal STRs are counts of repeated genetic code. As autosomal DNA recombines each generation, the number of markers shared with a specific ancestor is reduced by half each generation.
Heroin acts as a lipid soluble âprodrugâ within the brain, meaning that heroin itself is inactive but it is metabolized into an active form within the body. After crossing the blood-brain barrier, heroin is metabolized into morphine, which actively binds to opiate receptors in the brain producing the high.
Profile. Heroin (diacetylmorphine) is a highly addictive Schedule I drug, and a heavily abused and extremely potent opiate. It is processed from morphine, a naturally-occurring substance extracted from the opium poppy-Papaver somniferum-a plant indigenous to the Middle East and Southeast Asia.rofile. Heroin (diacetylmorphine) is a highly addictive Schedule I drug, and a heavily abused and extremely potent opiate. It is processed from morphine, a naturally-occurring substance extracted from the opium poppy-Papaver somniferum-a plant indigenous to the Middle East and Southeast Asia.