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.
The primary component of opium is 12% morphine which is an alkaloid that is often processed chemically to produce illegal drugs such as heroin. Codeine and other non-narcotic alkaloids are also found in the latex that is derived from the opium poppy plant.