But evolution also requires repeated replication and mutation to generate the variation upon which selection works to give adaptive solutions.

The material selection was purposely limited and repeated throughout the home extending from inside to outside providing a harmonious overall 'look and feel' to the architecture and design.

First, it is a selection type designing of steel-cored belt conveyor, this part of program let computer finish large quantity of repeated calculating, proofing, checking table and selecting and so on.