1 For example, the disorder sickle cell anaemia is caused by a mutation in the gene that instructs the building of a protein called haemoglobin. 2  This causes the red blood cells to become an abnormal, rigid, sickle shape. 3  However, in African populations, having this mutation also protects against malaria.
Optimistic time - generally the shortest time in which the activity can be completed. It is common practice to specify optimistic times to be three standard deviations from the mean so that there is approximately a 1% chance that the activity will be completed within the optimistic time.
Sign up to access the rest of the document. Unformatted text preview: a. activity definition b. activity duration estimating c. activity sequencing d. activity resource estimating 14. On several information technology projects, a group of activities all start simultaneously, such as the many tasks that occur when a new system goes live.