Research To Date Has Shown: 1  ADHD is a neurobiologic condition whose symptoms are also dependent on the child's environment. 2  A lower level of activity in the parts of the brain that control attention and activity level may be associated with ADHD. 3  ADHD frequently runs in families.
Mosaic (genetics) In genetics, a mosaic (or mosaicism) means the presence of two different genotypes in an individual which developed from a single fertilized egg. As a result, the individual has two or more genetically different cell lines derived from a single zygote. Unusual events in cell division (mitosis).
The simplest definition of Mosaic is a picture or other design constructed from smaller pieces regardless of materials... It is the subject and style of the design, the choice of materials and the techniques or skill in creating and placing the pieces that contribute to the value of the mosaic whether it be personal, artistic or practical. Mosaics are more than just a paint-by-numbers exercise or a home-made jigsaw puzzle.