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).
exists and is an alternate of . There are several examples where environment influences gene expression.. For example, the freguency of an albino being born is 1 in 20,000, but in Hopi village for example, the frequency is 1 in 200. This is because they favour the trait by having consanguinous marriages often and hence the frequency increases.