|
Heritability is a statistic that describes the proportion of phenotypic ( a product of both genetic and environmental
characteristics) attributed to gentic differences among individuals. For
example, Heritability is seen to estimate about 50% of total variance attributed
to DNA differences between individuals.
If family resemblance is attributed to heredity than genetically related individuals
adopted apart should be similar even though that do not share the same family environment. Genetic influence
on individual differences in intelligence have been proven by Family, Twin, and Adoption studies.
Developmental Gentic
research (research that attempts to split the two factors of genetic and environment apart) has found that heritability
of intelligence increases during the life span because new genes come to affect intelligence as more sophisticated cognitive
processes come into play during development.
|
