The system that is responsible for breaking down food and releasing essential nutrients and other substances that the body needs and requires is the digestive system.
This might represent evolution of a species or the influence of the environment on the expression of a genotype.
Negative: Blood Glucose. The pancreas is releasing more and more insulin in order to get glucose levels in the blood back to a set point.
Positive: Estrogen levels. The anterior pituitary releases estrogen at different levels and the levels fluctuate.
<span>Gene expression is the process which the cell response to change. Since the Prokaryotic transcription and translation occur simultaneously in the cytoplasm, and regulation occurs at the transcriptional level is the two reasons.</span>
