The two system that are primarily responsible for maintaining homeostasis during exercise are RESPIRATORY AND CIRCULATORY SYSTEMS.
During exercise, the respiratory and the circulatory systems work together to ensure that partial pressure of oxygen in the arteries is maintained, efficient elimination of carbon dioxide and buffering of metabolic acids produce during exercise.
You could name them f1, f2, f3. That is how I was taught.
Answer:
A mutation may be bad and good depending on the particular environmental conditions
Explanation:
For example, the falciform anemia is a hereditary disease caused by a mutation where the ability to transport oxygen of red blood cells is reduced; however, this genetic disorder is widespread in some African populations because it is a condition that confers resistance to falciparum malaria. In consequence, falciform anemia is a detrimental mutation that may also be beneficial in endemic malaria regions.
Moreover, it is important to note that the higher proportion of non-synonymous substitutions are not subject to selection (only a minor percentage are positively selected) because they are generally localized within non-coding regions, thereby having neutral status.
