04:08
The Search for Intelligence: Environmental and Genetic Influences on Intelligence
Intelligence represents an interaction between genes and environment. Genes for abilities may not be totally additive, a concept known as emergenesis. Hundreds of genes may contribute a small amount of variance to a particular trait like reading dis...
03:20
Codes of Life: Molecular Geneticists Search for Specific Genes that Influence Behavior
Molecular geneticists are using DNA techniques to find the combination of genes, often hundreds in number, that indicate risk for a particular trait like reading disability. Although some critics feel such knowledge may unfairly label a child, resea...