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).
A fascinating example of how expression of the genetic code can be influenced is the agouti mouse. Ce rtain genetic traits of these mice can lead them to be obese, diabetic and have an increased susceptibility to tumors. These mice even have shorter life spans.