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.
Evaluation Measures Resources This list is intended to help providers of dementia-related services identify appropriate and well-researched measures in support of their program evaluation plans. Choosing existing measures saves time and lends credibility to evaluation findings. The use of standard measures also allows for greater comparability of results between projects.