Consider the following hormones and their role in the workings of the endocrine system: Where the hormone is produced. Hormone(s) secreted. Hormone function. Adrenal glands. Aldosterone. Regulates salt, water balance, and blood pressure.
Sometimes there are tissue-specific mutations that control formation of certain tissues and/or organs. For instance, if mutation affects skin then the skin would be wrinkly/ugly but organism would still develop.
These three ideas seem to run together, so it's important that you are able to distinguish among them. The theory that organisms change over time is evolution. The mechanism b â¦ y which organisms evolve is natural selection. Survival of the fittest explains how natural selection works. Answer = Natural Selection The process of natural selection, of course.opulations evolve as the individual organisms less able to survive in the current environment die and fail to reproduce. That is natural selection.