Mortality in babies is an example of Stabilizing Selection.

Explanation:
- Stabilizing selection is a type of natural selection that favors the intermediate phenotypes rather than the extreme ones. It maintains the average traits within a population and reduces the genetic variation.
- In the context of mortality in babies, stabilizing selection refers to the selection pressure that acts to reduce the extreme phenotypes, such as extremely low birth weight or extremely high birth weight, which are associated with higher mortality rates.
- Stabilizing selection in this case operates to favor babies with average birth weight and other traits that are within the normal range, as they are more likely to survive and thrive compared to those with extreme characteristics.
- The selection pressure is exerted through various factors such as genetic factors, maternal health, access to proper prenatal care, and environmental conditions.
- Babies with extremely low birth weight may have underdeveloped organs and weak immune systems, making them more susceptible to infections and other health complications. On the other hand, babies with extremely high birth weight may face difficulties during delivery and have a higher risk of birth injuries.
- Stabilizing selection helps to maintain the overall health and survival of the baby population by reducing the occurrence of extreme traits that are associated with higher mortality rates.
- It is important to note that stabilizing selection does not completely eliminate the occurrence of extreme phenotypes but rather reduces their frequency in the population.
- Stabilizing selection is a common mechanism in many natural populations, as it helps to maintain the stability and adaptability of the species by favoring traits that are within the optimal range for survival and reproduction.

In summary, mortality in babies is an example of stabilizing selection because it acts to reduce the occurrence of extreme phenotypes associated with higher mortality rates and favors the average traits within the population.