PHP â Sort Functions For Arrays. In this chapter, we will go through the following PHP array sort functions: sort() â sort arrays in ascending order. rsort() â sort arrays in descending order. asort() â sort associative arrays in ascending order, according to the value.
Environmental factors that can affect gene expression. Exposing a fetus, infant, or child to a chemical or nutritional (or other) stressor during development can affect the risk of disease development even into adulthood. The mechanisms involved are probably epigenetics (Boekelheide et al. 2012).
New research suggests environment is stronger than genes. 1  Personality traits are inherited through observed behaviour, not genetics. 2  Foster parents have greater influence on personality development than birth parents in zebra finches. 3  Study raises questions about the inheritance of personality in humans.