Step-by-step explanation:
The result that might be a consequence of stabilizing selection is that infants born with weights between 3 and 4 kg have a higher survival than infants much lighter or heavier at birth. Stabilizing selection is a type of natural selection that favors individuals with intermediate, or average, traits, while selecting against individuals with extreme traits. In this case, infants with birth weights between 3 and 4 kg may be more likely to survive and thrive because they are better adapted to the conditions of their environment, while infants that are much lighter or heavier may be at a disadvantage.
The decrease in the number of different breeds of dog and the increase in antibiotic-resistant strains of bacteria are not examples of stabilizing selection. The decrease in the number of different breeds of dog may be due to selective breeding for specific traits, which can lead to reduced genetic diversity and an increased risk of health problems. The increase in antibiotic-resistant strains of bacteria is due to directional selection, which occurs when a particular trait is favored and becomes more common in a population over time. In this case, the trait that is being selected for is antibiotic resistance, which can make bacteria more difficult to treat with antibiotics.