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.
METABOLISM In the body, all of the opiates are ultimately converted to morphine, and morphine is converted to morphine-3,6-diglucuronide (Figure 2). The metabolic pathways of heroin and codeine are briefly described below. Heroin Heroin is rapidly metabolised in the body to morphine via 6-monoacetylmorphine.