Pleiotropy. Pleiotropy is the phenomenon whereby a single gene has multiple consequences in numerous tissues. Pleiotropic effects stem from both normal and mutated genes, but those caused by mutations are often more noticeable and easier to study.leiotropy. Pleiotropy is the phenomenon whereby a single gene has multiple consequences in numerous tissues. Pleiotropic effects stem from both normal and mutated genes, but those caused by mutations are often more noticeable and easier to study.
An evaluation instrument is typically a questionnaire, an interview script, or a set of observation guidelines, used to evaluate one or more aspects of an intervention in the drugs field.nstruments are generally classed according to the intervention field they are designed to be used in (treatment, prevention, or harm reduction), though some instruments may be usable in more than one field.
indigometer. an instrument used for determining the strength of an indigo solution. instrumentation. 1. the technology of designing and constructing instruments, especially for use in science and industry.2. a particular system of instruments in a special context.3. instruments collectively.n instrument used for determining the strength of an indigo solution. instrumentation. 1. the technology of designing and constructing instruments, especially for use in science and industry.