Natural Selection is a process in which certain traits become more common or not. This is determined by the necessity of certain traits and the environment the species finds itself in. Natural selection only acts on existing traits because they are the traits active in a given species in a given environment.
Answer:
Positive feedback loops enhance or amplify changes; this tends to move a system away from its equilibrium state and make it more unstable. Negative feedbacks tend to dampen or buffer changes; this tends to hold a system to some equilibrium state making it more stable.
Some examples of positive feedback are contractions in child birth and the ripening of fruit; negative feedback examples include the regulation of blood glucose levels and osmoregulation.
Explanation:
For veterinarians, the use of DNA technology is to diagnose,
prevent and treat diseases in animals.
Genetic engineering is also used when a certain animal produce a transgenic
animals and breeds from different species for therapeutic proteins, also called
as xenografting.
<span> </span>
