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).
Zionism is a political movement that includes many shades of opinion. Different factions of the Zionist movement and different commentators have offered different definitions of Zionism that suit their purposes and outlook.Not all of them are historically or ideologically accurate as generalizations.ionism is a political movement that includes many shades of opinion. Different factions of the Zionist movement and different commentators have offered different definitions of Zionism that suit their purposes and outlook.