Question

1. certain natural selection pressures can cause genetic diversity within a species to decrease. what is a possible effect on a population that has had a decrease in the genetic diversity within the population? a the population will be less likely to find sources of food because all of the individuals in the population will be competing for the same types of prey. b the population will be more likely to adapt to changes in the ecosystem over time because the genes that remain in the population are more likely to mutate. c the population will have a greater chance of surviving when changes in the ecosystem occur because only those with advantageous genes have survived. d the population will be at risk if a new disease is introduced because a greater percentage of the population has the same traits that make them vulnerable to the disease. 5. feral pigs are an invasive species commonly found in the pineywoods of east texas. areas where feral pigs are found often have damaged farmlands, grass, and tree roots. when the pigs live close to water sources, their presence erodes the soil. this disrupts the native vegetation and makes those plants vulnerable to invasive plant species. there are no known natural predators to feral pigs. how will the removal of the feral pig affect existing populations in that ecosystem? a removing the pigs will not affect the ecosystem because the pigs have no natural predators that will be affected by their removal. b removing the pigs will cause an increase in native plant populations over generations because the pigs will no longer damage the land. c removing the pigs will cause the native vegetation to become quickly overgrown because the plants will no longer be the prey of the pigs. d removing the pigs will cause an increase in invasive plant populations because the pigs were the only organisms eating invasive plants.

Explanation:

• En la pregunta 4, una disminución en la diversidad genética significa que menos variación genética hay en la población. Esto hace que la población sea más vulnerable a enfermedades nuevas, ya que una mayor proporción de individuos tendrá las mismas características que las exponen a la enfermedad.
• En la pregunta 5, los cerdos salvajes son una especie invasiva que daña los suelos, la vegetación nativa y facilita la entrada de otras especies invasivas. Al removerlos, la vegetación nativa tendría menos daño y probablemente aumentaría en número a lo largo de las generaciones.

Answer:

1. D. The population will be at risk if a new disease is introduced because a greater percentage of the population has the same traits that make them vulnerable to the disease.
2. B. Removing the pigs will cause an increase in native plant populations over generations because the pigs will no longer damage the land.