In fact, the definition of epigenetics given by Jabonka and Raz (2009) as 'the study of the processes that underly developmental plasticity and canalization and that bring about persistent developmental effects in both prokaryotes and eukaryotes' underlines its role in embryogenesis and cell differentiation.
Limiting nitrogen (N) conditions greatly affect plant growth and bring about morphological and developmental adaptations such as increased root/shoot ratio, early transition to flowering and early senescence [ 1].
The growing field of evolutionary developmental biology ('evo-devo'), approaches this question by determining how changes in the number, sequence and expression of developmental regulatory genes bring about formation of new structures.
These results indicate that overexpression of the exo-glucanase gene brought about various developmental defects associated with modification of cell wall and enhanced saccharification in rice.
Interestingly, in mice, similarly to rats, the behavioral changes brought about by developmental CPF exposure are sexually dimorphic and involve associative functions, as well as sex-specific social responses (Ricceri et al. 2003, 2006).
He noted that developmental reactions 'are adjusted to bring about one definite end result regardless of minor conditions, hence the remarkable constancy of the wild type' [ 28].
Although we have extensive understanding of the physiological activities of organs at multiple levels, we know far less about the developmental mechanisms and genetic networks that bring about physiological maturation.
While binding to the receptor is necessary, it is not sufficient to bring about a chain of events leading to various responses including enzyme induction, immunotoxicity, reproductive and endocrine effects, developmental toxicity, chloracne, tumor promotion, etc.
Neither would be easy to bring about.
"What it does is bring about awareness".
