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.
Appendix 2: Evaluation Instruments. Also available as a pdf file. This appendix provides examples of the various types of instruments that can be used in the evaluation of learning technology and/or its implementation.bservation Log. A blank photo-copyable proforma of the type of form used to collect information in an observation based evaluation exercise. Observation based evaluation is discussed in chapter 12. Provided by Philip Crompton.